It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0861)

It was discovered that the KVM implementation in the Linux kernel allowed passthrough of the diagnostic I/O port 0x80. An attacker in a guest VM could use this to cause a denial of service (system crash) in the host OS. (CVE-2017-1000407)

It was discovered that a use-after-free vulnerability existed in the network namespaces implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15129)

Andrey Konovalov discovered that the usbtest device driver in the Linux kernel did not properly validate endpoint metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16532)

Andrey Konovalov discovered that the SoundGraph iMON USB driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16537)

Andrey Konovalov discovered that the IMS Passenger Control Unit USB driver in the Linux kernel did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16645)

Andrey Konovalov discovered that the DiBcom DiB0700 USB DVB driver in the Linux kernel did not properly handle detach events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16646)

Andrey Konovalov discovered that the ASIX Ethernet USB driver in the Linux kernel did not properly handle suspend and resume events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16647)

Andrey Konovalov discovered that the CDC USB Ethernet driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash).
(CVE-2017-16649)

Andrey Konovalov discovered that the QMI WWAN USB driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash).
(CVE-2017-16650)

It was discovered that the HugeTLB component of the Linux kernel did not properly handle holes in hugetlb ranges. A local attacker could use this to expose sensitive information (kernel memory).
(CVE-2017-16994)

It was discovered that the netfilter component of the Linux did not properly restrict access to the connection tracking helpers list. A local attacker could use this to bypass intended access restrictions.
(CVE-2017-17448)

It was discovered that the netfilter passive OS fingerprinting (xt_osf) module did not properly perform access control checks. A local attacker could improperly modify the system-wide OS fingerprint list. (CVE-2017-17450)

Dmitry Vyukov discovered that the KVM implementation in the Linux kernel contained an out-of-bounds read when handling memory-mapped I/O. A local attacker could use this to expose sensitive information.
(CVE-2017-17741)

It was discovered that the Salsa20 encryption algorithm implementations in the Linux kernel did not properly handle zero-length inputs. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-17805)

It was discovered that the HMAC implementation did not validate the state of the underlying cryptographic hash algorithm. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17806)

It was discovered that the keyring implementation in the Linux kernel did not properly check permissions when a key request was performed on a tasks' default keyring. A local attacker could use this to add keys to unauthorized keyrings. (CVE-2017-17807)

It was discovered that a race condition existed in the OCFS2 file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2017-18204)

It was discovered that the Broadcom NetXtremeII ethernet driver in the Linux kernel did not properly validate Generic Segment Offload (GSO) packet sizes. An attacker could use this to cause a denial of service (interface unavailability). (CVE-2018-1000026)

It was discovered that the Reliable Datagram Socket (RDS) implementation in the Linux kernel contained an out-of-bounds during RDMA page allocation. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-5332)

Mohamed Ghannam discovered a NULL pointer dereference in the RDS (Reliable Datagram Sockets) protocol implementation of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-5333)

Fan Long Fei  discovered that a race condition existed in loop block device implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-5344).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A vulnerability was found in the key management     subsystem of the Linux kernel. An update on an     uninstantiated key could cause a kernel panic, leading     to denial of service (DoS).(CVE-2017-15299)

  - It was found that fanout_add() in     'net/packet/af_packet.c' in the Linux kernel, before     version 4.13.6, allows local users to gain privileges     via crafted system calls that trigger mishandling of     packet_fanout data structures, because of a race     condition (involving fanout_add and packet_do_bind)     that leads to a use-after-free bug.(CVE-2017-15649)

  - The keyctl_read_key function in security/keys/keyctl.c     in the Key Management subcomponent in the Linux kernel     before 4.13.5 does not properly consider that a key may     be possessed but negatively instantiated, which allows     local users to cause a denial of service (OOPS and     system crash) via a crafted KEYCTL_READ     operation.(CVE-2017-12192)

  - The Linux kernel built with the KVM visualization     support (CONFIG_KVM), with nested visualization(nVMX)     feature enabled (nested=1), was vulnerable to a stack     buffer overflow issue. The vulnerability could occur     while traversing guest page table entries to resolve     guest virtual address(gva). An L1 guest could use this     flaw to crash the host kernel resulting in denial of     service (DoS) or potentially execute arbitrary code on     the host to gain privileges on the     system.(CVE-2017-12188)

  - The imon_probe function in drivers/media/rc/imon.c in     the Linux kernel through 4.13.11 allows local users to     cause a denial of service (NULL pointer dereference and     system crash) or possibly have unspecified other impact     via a crafted USB device.(CVE-2017-16537)

  - drivers/media/usb/dvb-usb-v2/lmedm04.c in the Linux     kernel through 4.13.11 allows local users to cause a     denial of service (general protection fault and system     crash) or possibly have unspecified other impact via a     crafted USB device, related to a missing warm-start     check and incorrect attach timing     (dm04_lme2510_frontend_attach versus     dm04_lme2510_tuner).(CVE-2017-16538)

  - The cx231xx_usb_probe function in     drivers/media/usb/cx231xx/cx231xx-cards.c in the Linux     kernel through 4.13.11 allows local users to cause a     denial of service (NULL pointer dereference and system     crash) or possibly have unspecified other impact via a     crafted USB device.(CVE-2017-16536)

  - The usb_get_bos_descriptor function in     drivers/usb/core/config.c in the Linux kernel before     4.13.10 allows local users to cause a denial of service     (out-of-bounds read and system crash) or possibly have     unspecified other impact via a crafted USB     device.(CVE-2017-16535)

  - The cdc_parse_cdc_header function in     drivers/usb/core/message.c in the Linux kernel before     4.13.6 allows local users to cause a denial of service     (out-of-bounds read and system crash) or possibly have     unspecified other impact via a crafted USB     device.(CVE-2017-16534)

  - The usbhid_parse function in     drivers/hid/usbhid/hid-core.c in the Linux kernel     before 4.13.8 allows local users to cause a denial of     service (out-of-bounds read and system crash) or     possibly have unspecified other impact via a crafted     USB device.(CVE-2017-16533)

  - The get_endpoints function in     drivers/usb/misc/usbtest.c in the Linux kernel through     4.13.11 allows local users to cause a denial of service     (NULL pointer dereference and system crash) or possibly     have unspecified other impact via a crafted USB     device.(CVE-2017-16532)

  - drivers/usb/core/config.c in the Linux kernel before     4.13.6 allows local users to cause a denial of service     (out-of-bounds read and system crash) or possibly have     unspecified other impact via a crafted USB device,     related to the USB_DT_INTERFACE_ASSOCIATION     descriptor.(CVE-2017-16531)

  - The uas driver in the Linux kernel before 4.13.6 allows     local users to cause a denial of service (out-of-bounds     read and system crash) or possibly have unspecified     other impact via a crafted USB device, related to     drivers/usb/storage/uas-detect.h and     drivers/usb/storage/uas.c.(CVE-2017-16530)

  - The snd_usb_create_streams function in sound/usb/card.c     in the Linux kernel before 4.13.6 allows local users to     cause a denial of service (out-of-bounds read and     system crash) or possibly have unspecified other impact     via a crafted USB device.(CVE-2017-16529)

  - sound/core/seq_device.c in the Linux kernel before     4.13.4 allows local users to cause a denial of service     (snd_rawmidi_dev_seq_free use-after-free and system     crash) or possibly have unspecified other impact via a     crafted USB device.(CVE-2017-16528)

  - sound/usb/mixer.c in the Linux kernel before 4.13.8     allows local users to cause a denial of service     (snd_usb_mixer_interrupt use-after-free and system     crash) or possibly have unspecified other impact via a     crafted USB device.(CVE-2017-16527)

  - drivers/uwb/uwbd.c in the Linux kernel before 4.13.6     allows local users to cause a denial of service     (general protection fault and system crash) or possibly     have unspecified other impact via a crafted USB     device.(CVE-2017-16526)

  - The usb_serial_console_disconnect function in     drivers/usb/serial/console.c in the Linux kernel before     4.13.8 allows local users to cause a denial of service     (use-after-free and system crash) or possibly have     unspecified other impact via a crafted USB device,     related to disconnection and failed     setup.(CVE-2017-16525)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3754-1 advisory.

    Ralf Spenneberg discovered that the ext4 implementation in the Linux kernel did not properly validate meta     block groups. An attacker with physical access could use this to specially craft an ext4 image that causes     a denial of service (system crash). (CVE-2016-10208)

    It was discovered that an information disclosure vulnerability existed in the ACPI implementation of the     Linux kernel. A local attacker could use this to expose sensitive information (kernel memory addresses).
    (CVE-2017-11472)

    It was discovered that a buffer overflow existed in the ACPI table parsing implementation in the Linux     kernel. A local attacker could use this to construct a malicious ACPI table that, when loaded, caused a     denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-11473)

    It was discovered that the generic SCSI driver in the Linux kernel did not properly initialize data     returned to user space in some situations. A local attacker could use this to expose sensitive information     (kernel memory). (CVE-2017-14991)

    It was discovered that a race condition existed in the packet fanout implementation in the Linux kernel. A     local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary     code. (CVE-2017-15649)

    Andrey Konovalov discovered that the Ultra Wide Band driver in the Linux kernel did not properly check for     an error condition. A physically proximate attacker could use this to cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2017-16526)

    Andrey Konovalov discovered that the ALSA subsystem in the Linux kernel contained a use-after-free     vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly     execute arbitrary code. (CVE-2017-16527)

    Andrey Konovalov discovered that the ALSA subsystem in the Linux kernel did not properly validate USB     audio buffer descriptors. A physically proximate attacker could use this cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2017-16529)

    Andrey Konovalov discovered that the USB subsystem in the Linux kernel did not properly validate USB     interface association descriptors. A physically proximate attacker could use this to cause a denial of     service (system crash). (CVE-2017-16531)

    Andrey Konovalov discovered that the usbtest device driver in the Linux kernel did not properly validate     endpoint metadata. A physically proximate attacker could use this to cause a denial of service (system     crash). (CVE-2017-16532)

    Andrey Konovalov discovered that the USB subsystem in the Linux kernel did not properly validate USB HID     descriptors. A physically proximate attacker could use this to cause a denial of service (system crash).
    (CVE-2017-16533)

    Andrey Konovalov discovered that the USB subsystem in the Linux kernel did not properly validate USB BOS     metadata. A physically proximate attacker could use this to cause a denial of service (system crash).
    (CVE-2017-16535)

    Andrey Konovalov discovered that the Conexant cx231xx USB video capture driver in the Linux kernel did not     properly validate interface descriptors. A physically proximate attacker could use this to cause a denial     of service (system crash). (CVE-2017-16536)

    Andrey Konovalov discovered that the SoundGraph iMON USB driver in the Linux kernel did not properly     validate device metadata. A physically proximate attacker could use this to cause a denial of service     (system crash). (CVE-2017-16537)

    It was discovered that the DM04/QQBOX USB driver in the Linux kernel did not properly handle device     attachment and warm-start. A physically proximate attacker could use this to cause a denial of service     (system crash) or possibly execute arbitrary code. (CVE-2017-16538)

    Andrey Konovalov discovered an out-of-bounds read in the GTCO digitizer USB driver for the Linux kernel. A     physically proximate attacker could use this to cause a denial of service (system crash) or possibly     execute arbitrary code. (CVE-2017-16643)

    Andrey Konovalov discovered that the video4linux driver for Hauppauge HD PVR USB devices in the Linux     kernel did not properly handle some error conditions. A physically proximate attacker could use this to     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16644)

    Andrey Konovalov discovered that the IMS Passenger Control Unit USB driver in the Linux kernel did not     properly validate device descriptors. A physically proximate attacker could use this to cause a denial of     service (system crash). (CVE-2017-16645)

    Andrey Konovalov discovered that the QMI WWAN USB driver did not properly validate device descriptors. A     physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16650)

    It was discovered that the USB Virtual Host Controller Interface (VHCI) driver in the Linux kernel     contained an information disclosure vulnerability. A physically proximate attacker could use this to     expose sensitive information (kernel memory). (CVE-2017-16911)

    It was discovered that the USB over IP implementation in the Linux kernel did not validate endpoint     numbers. A remote attacker could use this to cause a denial of service (system crash). (CVE-2017-16912)

    It was discovered that the USB over IP implementation in the Linux kernel did not properly validate     CMD_SUBMIT packets. A remote attacker could use this to cause a denial of service (excessive memory     consumption). (CVE-2017-16913)

    It was discovered that the USB over IP implementation in the Linux kernel contained a NULL pointer     dereference error. A remote attacker could use this to cause a denial of service (system crash).
    (CVE-2017-16914)

    It was discovered that the core USB subsystem in the Linux kernel did not validate the number of     configurations and interfaces in a device. A physically proximate attacker could use this to cause a     denial of service (system crash). (CVE-2017-17558)

    It was discovered that an integer overflow existed in the perf subsystem of the Linux kernel. A local     attacker could use this to cause a denial of service (system crash). (CVE-2017-18255)

    It was discovered that the keyring subsystem in the Linux kernel did not properly prevent a user from     creating keyrings for other users. A local attacker could use this cause a denial of service or expose     sensitive information. (CVE-2017-18270)

    Andy Lutomirski and Willy Tarreau discovered that the KVM implementation in the Linux kernel did not     properly emulate instructions on the SS segment register. A local attacker in a guest virtual machine     could use this to cause a denial of service (guest OS crash) or possibly gain administrative privileges in     the guest OS. (CVE-2017-2583)

    Dmitry Vyukov discovered that the KVM implementation in the Linux kernel improperly emulated certain     instructions. A local attacker could use this to obtain sensitive information (kernel memory).
    (CVE-2017-2584)

    It was discovered that the KLSI KL5KUSB105 serial-to-USB device driver in the Linux kernel did not     properly initialize memory related to logging. A local attacker could use this to expose sensitive     information (kernel memory). (CVE-2017-5549)

    Andrey Konovalov discovered an out-of-bounds access in the IPv6 Generic Routing Encapsulation (GRE)     tunneling implementation in the Linux kernel. An attacker could use this to possibly expose sensitive     information. (CVE-2017-5897)

    Andrey Konovalov discovered that the LLC subsytem in the Linux kernel did not properly set up a destructor     in certain situations. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2017-6345)

    Dmitry Vyukov discovered race conditions in the Infrared (IrDA) subsystem in the Linux kernel. A local     attacker could use this to cause a denial of service (deadlock). (CVE-2017-6348)

    Andy Lutomirski discovered that the KVM implementation in the Linux kernel was vulnerable to a debug     exception error when single-stepping through a syscall. A local attacker in a non-Linux guest vm could     possibly use this to gain administrative privileges in the guest vm. (CVE-2017-7518)

    Tuomas Haanp and Ari Kauppi discovered that the NFSv2 and NFSv3 server implementations in the Linux     kernel did not properly handle certain long RPC replies. A remote attacker could use this to cause a     denial of service (system crash). (CVE-2017-7645)

    Pengfei Wang discovered that a race condition existed in the NXP SAA7164 TV Decoder driver for the Linux     kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute     arbitrary code. (CVE-2017-8831)

    Pengfei Wang discovered that the Turtle Beach MultiSound audio device driver in the Linux kernel contained     race conditions when fetching from the ring-buffer. A local attacker could use this to cause a denial of     service (infinite loop). (CVE-2017-9984, CVE-2017-9985)

    It was discovered that the wait4() system call in the Linux kernel did not properly validate its arguments     in some situations. A local attacker could possibly use this to cause a denial of service.
    (CVE-2018-10087)

    It was discovered that the kill() system call implementation in the Linux kernel did not properly validate     its arguments in some situations. A local attacker could possibly use this to cause a denial of service.
    (CVE-2018-10124)

    Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly validate     meta-data information. An attacker could use this to construct a malicious xfs image that, when mounted,     could cause a denial of service (system crash). (CVE-2018-10323)

    Zhong Jiang discovered that a use-after-free vulnerability existed in the NUMA memory policy     implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2018-10675)

    Wen Xu discovered that a buffer overflow existed in the ext4 filesystem implementation in the Linux     kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a     denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10877)

    Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep meta-     data information consistent in some situations. An attacker could use this to construct a malicious ext4     image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10881)

    Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle     corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem     that caused a denial of service (system crash) when mounted. (CVE-2018-1092)

    Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle     corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem     that caused a denial of service (system crash) when mounted. (CVE-2018-1093)

    It was discovered that the cdrom driver in the Linux kernel contained an incorrect bounds check. A local     attacker could use this to expose sensitive information (kernel memory). (CVE-2018-10940)

    Shankara Pailoor discovered that the JFS filesystem implementation in the Linux kernel contained a buffer     overflow when handling extended attributes. A local attacker could use this to cause a denial of service     (system crash) or possibly execute arbitrary code. (CVE-2018-12233)

    Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly handle an     error condition with a corrupted xfs image. An attacker could use this to construct a malicious xfs image     that, when mounted, could cause a denial of service (system crash). (CVE-2018-13094)

    It was discovered that the Linux kernel did not properly handle setgid file creation when performed by a     non-member of the group. A local attacker could use this to gain elevated privileges. (CVE-2018-13405)

    Silvio Cesare discovered that the generic VESA frame buffer driver in the Linux kernel contained an     integer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly     execute arbitrary code. (CVE-2018-13406)

    Daniel Jiang discovered that a race condition existed in the ipv4 ping socket implementation in the Linux     kernel. A local privileged attacker could use this to cause a denial of service (system crash).
    (CVE-2017-2671)

    It was discovered that an information leak existed in the generic SCSI driver in the Linux kernel. A local     attacker could use this to expose sensitive information (kernel memory). (CVE-2018-1000204)

    It was discovered that a memory leak existed in the Serial Attached SCSI (SAS) implementation in the Linux     kernel. A physically proximate attacker could use this to cause a denial of service (memory exhaustion).
    (CVE-2018-10021)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - It was found that in the Linux kernel through     v4.14-rc5, bio_map_user_iov() and bio_unmap_user() in     'block/bio.c' do unbalanced pages refcounting if IO     vector has small consecutive buffers belonging to the     same page. bio_add_pc_page() merges them into one, but     the page reference is never dropped, causing a memory     leak and possible system lockup due to out-of-memory     condition.(CVE-2017-12190)

  - A vulnerability was found in the Key Management sub     component of the Linux kernel, where when trying to     issue a KEYTCL_READ on a negative key would lead to a     NULL pointer dereference. A local attacker could use     this flaw to crash the kernel.(CVE-2017-12192)

  - A flaw was found in the Linux kernel's implementation     of associative arrays introduced in 3.13. This     functionality was backported to the 3.10 kernels in Red     Hat Enterprise Linux 7. The flaw involved a null     pointer dereference in assoc_array_apply_edit() due to     incorrect node-splitting in assoc_array implementation.
    This affects the keyring key type and thus key addition     and link creation operations may cause the kernel to     panic.(CVE-2017-12193)

  - A divide-by-zero vulnerability was found in the
    __tcp_select_window function in the Linux kernel. This     can result in a kernel panic causing a local denial of     service.(CVE-2017-14106)

  - The move_pages system call in mm/migrate.c in the Linux     kernel doesn't check the effective uid of the target     process. This enables a local attacker to learn the     memory layout of a setuid executable allowing     mitigation of ASLR.(CVE-2017-14140)

  - The iscsi_if_rx() function in     'drivers/scsi/scsi_transport_iscsi.c' in the Linux     kernel from v2.6.24-rc1 through 4.13.2 allows local     users to cause a denial of service (a system panic) by     making a number of certain syscalls by leveraging     incorrect length validation in the kernel     code.(CVE-2017-14489)

  - The sg_ioctl() function in 'drivers/scsi/sg.c' in the     Linux kernel, from version 4.12-rc1 to 4.14-rc2, allows     local users to obtain sensitive information from     uninitialized kernel heap-memory locations via an     SG_GET_REQUEST_TABLE ioctl call for     '/dev/sg0'.(CVE-2017-14991)

  - The tower_probe function in     drivers/usb/misc/legousbtower.c in the Linux kernel     before 4.8.1 allows local users (who are physically     proximate for inserting a crafted USB device) to gain     privileges by leveraging a write-what-where condition     that occurs after a race condition and a NULL pointer     dereference.(CVE-2017-15102)

  - A vulnerability was found in the Linux kernel when     peeling off an association to the socket in another     network namespace. All transports in this association     are not to be rehashed and keep using the old key in     hashtable, thus removing transports from hashtable when     closing the socket, all transports are being freed.
    Later on a use-after-free issue could be caused when     looking up an association and dereferencing the     transports.(CVE-2017-15115)

  - A use-after-free vulnerability was found in a network     namespaces code affecting the Linux kernel since     v4.0-rc1 through v4.15-rc5. The function     get_net_ns_by_id() does not check for the net::count     value after it has found a peer network in netns_ids     idr which could lead to double free and memory     corruption. This vulnerability could allow an     unprivileged local user to induce kernel memory     corruption on the system, leading to a crash. Due to     the nature of the flaw, privilege escalation cannot be     fully ruled out, although it is thought to be     unlikely.(CVE-2017-15129)

  - A use-after-free vulnerability was found when issuing     an ioctl to a sound device. This could allow a user to     exploit a race condition and create memory corruption     or possibly privilege escalation.(CVE-2017-15265)

  - A flaw was found in the implementation of associative     arrays where the add_key systemcall and KEYCTL_UPDATE     operations allowed for a NULL payload with a nonzero     length. When accessing the payload within this length     parameters value, an unprivileged user could trivially     cause a NULL pointer dereference (kernel     oops).(CVE-2017-15274)

  - A vulnerability was found in the key management     subsystem of the Linux kernel. An update on an     uninstantiated key could cause a kernel panic, leading     to denial of service (DoS).(CVE-2017-15299)

  - It was found that fanout_add() in     'net/packet/af_packet.c' in the Linux kernel, before     version 4.13.6, allows local users to gain privileges     via crafted system calls that trigger mishandling of     packet_fanout data structures, because of a race     condition (involving fanout_add and packet_do_bind)     that leads to a use-after-free bug.(CVE-2017-15649)

  - The usb_serial_console_disconnect function in     drivers/usb/serial/console.c in the Linux kernel,     before 4.13.8, allows local users to cause a denial of     service (use-after-free and system crash) or possibly     have unspecified other impact via a crafted USB device,     related to disconnection and failed     setup.(CVE-2017-16525)

  - The drivers/uwb/uwbd.c in the Linux kernel, before     4.13.6, allows local users to cause a denial of service     (general protection fault and system crash) or possibly     have unspecified other impact via a crafted USB     device.(CVE-2017-16526)

  - The sound/usb/mixer.c in the Linux kernel, before     4.13.8, allows local users to cause a denial of service     (snd_usb_mixer_interrupt use-after-free and system     crash) or possibly have unspecified other impact via a     crafted USB device.(CVE-2017-16527)

  - The sound/core/seq_device.c in the Linux kernel, before     4.13.4, allows local users to cause a denial of service     (snd_rawmidi_dev_seq_free use-after-free and system     crash) or possibly have unspecified other impact via a     crafted USB device.(CVE-2017-16528)

  - The snd_usb_create_streams function in sound/usb/card.c     in the Linux kernel, before 4.13.6, allows local users     to cause a denial of service (out-of-bounds read and     system crash) or possibly have unspecified other impact     via a crafted USB device.(CVE-2017-16529)

  - The uas driver in the Linux kernel before 4.13.6 allows     local users to cause a denial of service (out-of-bounds     read and system crash), or possibly have unspecified     other impacts via a crafted USB device, related to     drivers/usb/storage/uas-detect.h and     drivers/usb/storage/uas.c.(CVE-2017-16530)

  - The function drivers/usb/core/config.c in the Linux     kernel, allows local users to cause a denial of service     (out-of-bounds read and system crash) or possibly have     unspecified other impact via a crafted USB device,     related to the USB_DT_INTERFACE_ASSOCIATION     descriptor.(CVE-2017-16531)

  - The get_endpoints function in     drivers/usb/misc/usbtest.c in the Linux kernel through     4.13.11 allows local users to cause a denial of service     (NULL pointer dereference and system crash) or possibly     have unspecified other impact via a crafted USB     device.(CVE-2017-16532)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The 4.13.12 update contains a number of important fixes across the tree.

It contains security fixes for CVE-2017-16532 and CVE-2017-16538.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

遠端 Oracle Linux 6/7 主機上安裝的套件受到 ELSA-2018-4109 公告中提及的多個弱點影響。

  在 4.14.5 Linux 核心中，USB 核心子系統中「drivers/usb/core/config.c」的 usb_destroy_configuration() 函式未先考量組態和介面的最大數，便嘗試釋出資源，這會允許本機使用者透過特製 USB 裝置，引致拒絕服務（超出邊界存取）或可能造成其他不明影響。(CVE-2017-17558)

  Linux 核心 4.14.4 及之前版本中的 net/netfilter/nfnetlink_cthelper.c 對於新增、獲取和刪除作業，不需要使用 CAP_NET_ADMIN 功能，進而允許本機使用者繞過預定的存取限制，這是因為 nfnl_cthelper_list 資料結構是跨所有網路命名空間共用所致。
    (CVE-2017-17448)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/usb/misc/usbtest.c 的 get_endpoints 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (NULL 指標解除參照和系統當機)，或可能造成其他不明影響。(CVE-2017-16532)

  在 Linux 4.x 核心用於橋接的 32 位元 syscall 介面實作中發現一個缺陷。這可讓具權限的使用者任意寫入有限範圍的核心記憶體。(CVE-2018-1068)

  - 在 Linux 核心 4.15.15 及之前版本中，fs/ext4/balloc.c 的 ext4_valid_block_bitmap 函式可以讓攻擊者透過特製的 ext4 影像引致拒絕服務 (超出邊界讀取和系統當機)，其原因在於 balloc.c 和 ialloc 不會驗證點陣圖區塊編號。(CVE-2018-1093)

  - 在 Linux 核心 4.13.11 之前版本中，drivers/input/tablet/gtco.c 中的 parse_hid_report_descriptor 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (超出邊界讀取和系統當機)，或可能造成其他不明影響。(CVE-2017-16643)

  - 在 3.2 之前的 Linux 核心中，rds_message_alloc_sgs() 函式不會驗證 DMA 頁面配置期間使用的值，進而導致堆積型超出邊界寫入 (與 net/rds/rdma.c 中的 rds_rdma_extra_size 函式相關)。(CVE-2018-5332)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/media/rc/imon.c 中的 imon_probe 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (NULL 指標解除參照和系統當機)，或可能造成其他不明影響。(CVE-2017-16537)

  - 在 4.13.7 版之前的 Linux 核心中，KEYS 子系統針對已存在但未具現化的金鑰不當使用 add_key，這會允許本機使用者透過特製的系統呼叫，引致拒絕服務 (NULL 指標解除參照和系統當機) 或可能造成其他不明影響。
    (CVE-2017-15299)

請注意，Nessus 並未測試此問題，而是僅依據應用程式自我報告的版本號碼。

在 Linux 核心中發現數個弱點，這些弱點可能會導致權限提升、拒絕服務或資訊洩漏。CVE-2016-10208 Sergej Schumilo 和 Ralf Spenneberg 發現特製的 ext4 檔案系統在掛載時會觸發記憶體損毀。能夠提供掛載裝置或檔案系統影像的使用者可利用此缺陷，造成拒絕服務 (當機或資料損毀) 或可能執行權限提升。CVE-2017-8824 Mohamed Ghannam 發現 DCCP 實作在中斷並重新連線至通訊端時未正確管理資源，可能會導致釋放後使用錯誤。本機使用者可利用此問題造成拒絕服務 (當機或資料損毀)，或可能執行權限提升。在尚未載入 dccp 模組的系統上，可採用下列方式停用該模組以降低安全風險：echo >> /etc/modprobe.d/disable-dccp.conf install dccp false CVE-2017-8831 Pengfei Wang 發現 saa7164 視訊擷取驅動程式在完成驗證後會重新讀取 PCI 裝置的資料。能夠附加特別設計之 PCI 裝置的實際存在攻擊者，可利用此錯誤造成權限提升。CVE-2017-12190 Vitaly Mayatskikh 發現區塊層未正確計算來自使用者空間的原始 I/O 頁面參照。有權存取主機 SCSI 裝置的客戶機 VM 會惡意利用此問題，造成拒絕服務 (記憶體耗盡) 或有可能執行權限提升。CVE-2017-13080 在 WPA2 協定中發現一個弱點，會導致重新安裝相同的群組臨時金鑰 (GTK)，進而大幅降低 wifi 加密的安全性。這是被通稱為「KRACK」的問題之一。更新 GTK 通常是由 wpa 套件處理，此問題已在該套件中解決 (DLA-1150-1)。但是，有些 wifi 裝置仍會繼續作用，並在系統暫停時自動更新 GTK。核心亦須檢查並忽略重新安裝金鑰。CVE-2017-14051「shqking」報告 qla2xxx SCSI 主機驅動程式未正確驗證提供給其所建裝置的「optrom」sysfs 屬性的 I/O。此問題不太可能會造成任何安全性影響。CVE-2017-15115 Vladis Dronov 報告 SCTP 實作未正確處理「剝離」與另一個網路名稱空間的關聯。此問題會導致釋放後使用錯誤，本機使用者可惡意利用此問題造成拒絕服務 (當機或資料損毀)，或可能執行權限提升。在尚未載入 sctp 模組的系統上，可採用下列方式停用該模組以降低安全風險：echo >> /etc/modprobe.d/disable-sctp.conf install sctp false CVE-2017-15265 Michael23 Yu 報告有關建立和刪除連接埠的 ALSA 序列器子系統中存在爭用情形，會導致釋放後使用錯誤。有權存取 ALSA 序列器裝置的本機使用者可利用此問題造成拒絕服務 (當機或資料遺失)，或可能執行權限提升。CVE-2017-15299 Eric Biggers 發現 KEYS 子系統未正確處理更新未執行個體化的金鑰，會導致 null 解除參照。本機使用者可藉此造成拒絕服務 (損毀)。CVE-2017-15649「nixioaming」報告有關重新繫結扇出群組的封包通訊端 (AF_PACKET) 實作中存在爭用情形，會導致釋放後使用錯誤。具有 CAP_NET_RAW 能力的本機使用者可利用此問題造成拒絕服務 (當機或資料損毀)，或可能執行權限提升。CVE-2017-15868 Al Viro 發現藍牙網路封裝通訊協議 (BNEP) 實作未驗證傳遞至 BNEPCONNADD ioctl() 的第二個通訊端類型，會導致記憶體損毀。具有 CAP_NET_ADMIN 能力的本機使用者可利用此問題造成拒絕服務 (當機或資料損毀)，或可能執行權限提升。CVE-2017-16525 Andrey Konovalov 報告 USB 序列主控台實作未正確處理異常序列裝置斷線，會導致釋放後使用錯誤。在序列主控台設定失敗的情況中也發現類似問題。具備特別設計之 USB 裝置的實際存在使用者可利用此問題造成拒絕服務 (當機或資料損毀)，或可能造成權限提升。CVE-2017-16527 Andrey Konovalov 報告 USB 混音器驅動程式在探測裝置失敗時未正確取消 I/O，會導致釋放後使用錯誤。具備特別設計之 USB 裝置的實際存在使用者可利用此問題造成拒絕服務 (當機或資料損毀)，或可能造成權限提升。CVE-2017-16529 Andrey Konovalov 報告 USB 音效驅動程式未完整驗證描述元長度，會導致緩衝區過度讀取。具備特別設計之 USB 裝置的實際存在使用者可利用此問題，造成拒絕服務 (當機)。CVE-2017-16531 Andrey Konovalov 報告 USB 核心未驗證 IAD 長度，會導致緩衝區過度讀取。具備特別設計之 USB 裝置的實際存在使用者可利用此問題，造成拒絕服務 (當機)。CVE-2017-16532 Andrey Konovalov 報告 USB 測試驅動程式未正確處理含有特定端點組合的裝置。具備特別設計之 USB 裝置的實際存在使用者可利用此問題，造成拒絕服務 (當機)。CVE-2017-16533 Andrey Konovalov 報告 USB HID 驅動程式未完整驗證描述元長度，會導致緩衝區過度讀取。具備特別設計之 USB 裝置的實際存在使用者可利用此問題，造成拒絕服務 (當機)。CVE-2017-16535 Andrey Konovalov 報告 USB 核心未驗證 BOS 描述元長度，會導致緩衝區過度讀取。具備特別設計之 USB 裝置的實際存在使用者可利用此問題，造成拒絕服務 (當機)。CVE-2017-16536 Andrey Konovalov 報告 cx231xx 視訊擷取驅動程式未完整驗證裝置端點組態，會導致 null 解除參照。具備特別設計之 USB 裝置的實際存在使用者可利用此問題，造成拒絕服務 (當機)。CVE-2017-16537 Andrey Konovalov 報告 imon RC 驅動程式未完整驗證裝置介面組態，會導致 null 解除參照。具備特別設計之 USB 裝置的實際存在使用者可利用此問題，造成拒絕服務 (當機)。CVE-2017-16643 Andrey Konovalov 報告 gtco 平板電腦驅動程式未完整驗證描述元長度，會導致緩衝區過度讀取。具備特別設計之 USB 裝置的實際存在使用者可利用此問題，造成拒絕服務 (當機)。CVE-2017-16649 Bjørn Mork 發現 cdc_ether 網路驅動程式未驗證裝置的最大區段大小，可能會導致除以零錯誤。具備特別設計之 USB 裝置的實際存在使用者可利用此問題，造成拒絕服務 (當機)。CVE-2017-16939 Mohamed Ghannam 報告 (透過 Beyond Security 的 SecuriTeam Secure Disclosure 計劃) IPsec (xfrm) 實作在透過 netlink 傾印原則資訊時，未正確處理部分失敗情況。具有 CAP_NET_ADMIN 能力的本機使用者可利用此問題造成拒絕服務 (當機或資料損毀)，或可能執行權限提升。CVE-2017-1000407 Andrew Honig 報告 Intel 處理器的 KVM 實作允許直接存取主機 I/O 連接埠 0x80，此直接存取整體而言並不安全。在某些系統上，客戶機 VM 可利用此問題造成主機發生拒絕服務 (損毀)。針對 Debian 7「Wheezy」，這些問題已在 3.2.96-2 版本中修正。此版本中亦包括含 3.2.96 版在內的所有上游版本的錯誤修正。它亦解決了包含在 DLA-993-1 中的 CVE-2017-1000364 修正所造成的若干迴歸問題。建議您升級 linux 套件。注意：Tenable Network Security 已直接從 DLA 安全性公告擷取前置描述區塊。Tenable 已盡量在不造成其他問題的前提下，嘗試自動清理並將其格式化。

遠端 Ubuntu 14.04 LTS 主機上安裝的一個套件受到 USN-3619-2 公告中所提及的多個弱點影響。

  在 Linux 核心的 ALSA 子系統中，snd_pcm_info 函式有釋放後使用弱點，攻擊者可透過不明向量取得權限。(CVE-2017-0861)

  Linux核心 2.6.32 和更新版本受到拒絕服務的影響，藉由將診斷連接埠溢流 0x80，可觸發可導致核心錯誤的例外狀況。(CVE-2017-1000407)

  - 在 Linux 核心 4.12 之前版本中，drivers/acpi/acpica/nsutils.c 的 acpi_ns_terminate() 函式未排清運算元快取並會造成核心堆疊轉儲存，這讓本機使用者可以透過特製的 ACPI 表格，從核心記憶體取得敏感資訊並繞過 KASLR 保護機制 (在 4.9 及更早版本的核心中)。(CVE-2017-11472)

  在網路命名空間程式碼中發現一個會影響 4.14.11之前的 Linux 核心的釋放後使用弱點。net/core/net_namespace.c 中的 get_net_ns_by_id() 函式在 netns_ids idr 中發現對等網路之後未檢查 net: : count 值，這可能會導致重複釋放和記憶體損毀。無權限的本機使用者可利用此弱點，造成系統上的核心記憶體損毀，進而導致當機。雖然不太可能，但是由於缺陷的本質，無法完全排除權限提升狀況。(CVE-2017-15129)

  - 在 Linux 核心 4.13.4 之前版本中，sound/core/seq_device.c 讓本機使用者可以透過特製的 USB 裝置，造成拒絕服務 (snd_rawmidi_dev_seq_free 釋放後使用和系統當機)，或可能造成其他不明影響。(CVE-2017-16528)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/usb/misc/usbtest.c 的 get_endpoints 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (NULL 指標解除參照和系統當機)，或可能造成其他不明影響。(CVE-2017-16532)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/media/usb/cx231xx/cx231xx-cards.c 中的 cx231xx_usb_probe 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (NULL 指標解除參照和系統當機)，或可能造成其他不明影響。(CVE-2017-16536)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/media/rc/imon.c 中的 imon_probe 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (NULL 指標解除參照和系統當機)，或可能造成其他不明影響。(CVE-2017-16537)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/input/misc/ims-pcu.c 中的 ims_pcu_get_cdc_union_desc 函式可讓本機使用者透過特製的 USB 裝置，造成拒絕服務 (ims_pcu_parse_cdc_data 超出邊界讀取和系統當機)，或可能造成其他不明影響。(CVE-2017-16645)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/media/usb/dvb-usb/dib0700_devices.c 可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (BUG 和系統當機)，或可能造成其他不明影響。(CVE-2017-16646)

  - 在 Linux 核心 4.13.11 及其之前版本中，drivers/net/usb/cdc_ether.c 中的 usbnet_generic_cdc_bind 函式允許本機使用者透過特製的 USB 裝置來造成拒絕服務 (除以零錯誤和系統當機)，或可能造成其他不明影響。(CVE-2017-16649)

  - 在 Linux 核心 4.13.11 及之前版本中，drivers/net/usb/qmi_wwan.c 中的 qmi_wwan_bind 函式可讓本機使用者透過特製的 USB 裝置，引致拒絕服務 (除以零錯誤和系統當機)，或可能造成其他不明影響。(CVE-2017-16650)

  - 在 Linux 核心 4.14.8 之前版本和 4.4.114 版中，vhci_hcd 驅動程式允許本機攻擊者洩漏核心記憶體位址。如要成功利用此弱點，需要透過 IP 附加 USB 裝置。
    (CVE-2017-16911)

  - 在 Linux 核心 4.14.8 之前版本、4.9.71 和 4.4.114 版中，get_pipe() 函式 (drivers/usb/usbip/stub_rx.c) 允許攻擊者透過特製的 USB over IP 封包來造成拒絕服務 (超出邊界讀取)。(CVE-2017-16912)

  - 在 Linux 核心 4.14.8 之前版本、4.9.71 和 4.4.114 版中，stub_recv_cmd_submit() 函式 (drivers/usb/usbip/stub_rx.c) 在處理 CMD_SUBMIT 封包時，允許攻擊者透過特製的 USB over IP 封包來造成拒絕服務 (任意記憶體分配)。(CVE-2017-16913)

  - 在 Linux 核心 4.14.8 之前版本、4.9.71、4.1.49 和 4.4.107 版中，stub_send_ret_submit() 函式 (drivers/usb/usbip/stub_tx.c) 允許攻擊者透過特製的 USB over IP 封包來造成拒絕服務 (NULL 指標解除參照)。(CVE-2017-16914)

  - 在 4.14.2 之前的 Linux 核心中，mm/pagewalk.c 的 walk_hugetlb_range 函式不會正確處理 hugetlb 範圍中的漏洞，進而允許本機使用者透過特製的 mincore() 系統呼叫，從未初始化的核心記憶體取得敏感資訊。(CVE-2017-16994)

  - 在 Linux 核心 4.4 及其之前版本中，kernel/bpf/verifier.c 的 check_alu_op 函式允許本機使用者利用錯誤的簽章延伸模組，來造成拒絕服務 (記憶體損毀) 或可能造成其他不明影響。(CVE-2017-16995)

  Linux 核心 4.14.4 及之前版本中的 net/netfilter/nfnetlink_cthelper.c 對於新增、獲取和刪除作業，不需要使用 CAP_NET_ADMIN 功能，進而允許本機使用者繞過預定的存取限制，這是因為 nfnl_cthelper_list 資料結構是跨所有網路命名空間共用所致。
    (CVE-2017-17448)

  在 4.14.4 之前的 Linux 核心中，啟用 CONFIG_NLMON 時，net / netlink / af_netlink.c 的 __netlink_deliver_tap_skb 函式未將 Netlink 訊息的觀察限制為單一 net 命名空間，進而允許本機使用者利用 CAP_NET_ADMIN 功能針對系統上的所有 Netlink 活動探查 nlmon 介面，進而取得敏感資訊。(CVE-2017-17449)

  - Linux 核心 4.14.4 及之前版本的 net/netfilter/xt_osf.c 處理 add_callback 和 remove_callback 作業時，不要求使用 CAP_NET_ADMIN 功能，本機使用者因而可以繞過預定的存取限制，這是 xt_osf_fingers 資料結構是跨所有網路命名空間共用所致。
    (CVE-2017-17450)

  在 4.14.5 Linux 核心中，USB 核心子系統中「drivers/usb/core/config.c」的 usb_destroy_configuration() 函式未先考量組態和介面的最大數，便嘗試釋出資源，這會允許本機使用者透過特製 USB 裝置，引致拒絕服務（超出邊界存取）或可能造成其他不明影響。(CVE-2017-17558)

  - 在 4.14.7 之前的 Linux 核心中，KVM 實作允許攻擊者從核心記憶體取得潛在敏感資訊，即 write_mmio 堆疊型超出邊界讀取，這其實與 arch/x86/kvm/x86.c 和 include/trace/events/kvm.h 有關。(CVE-2017-17741)

  在 4.14.8 之前的 Linux 核心中，Salsa20 加密演算法未正確處理零長度輸入內容，本機攻擊者因而得以執行使用 blkcipher_walk API 的一連串特製系統呼叫，利用 AF_ALG 式 skcipher 介面 (CONFIG_CRYPTO_USER_API_SKCIPHER) 造成拒絕服務 (未初始化記憶體釋放和核心損毀)，或造成其他不明影響。Salsa20 的通用實作 (crypto/salsa20_generic.c) 和 x86 實作 (arch/x86/crypto/salsa20_glue.c) 皆容易受到影響。(CVE-2017-17805)

  - 在 4.14.8 版之前的 Linux 核心中，HMAC 實作 (crypto/hmac.c) 不會驗證基礎密碼編譯雜湊演算法是否沒有金鑰，這會允許本機攻擊者透過執行特製系統呼叫序列找出缺少的 SHA-3 初始化，藉此使用 AF_ALG 式雜湊介面  (CONFIG_CRYPTO_USER_API_HASH) 和 SHA-3 雜湊演算法 (CONFIG_CRYPTO_SHA3)，進而引致核心堆疊緩衝區溢位。(CVE-2017-17806)

  - 在 4.14.6 版之前的 Linux 核心中，KEYS 子系統在透過 request_key() 系統呼叫將金鑰新增至目前工作的預設要求金鑰 keyring 時，會省略存取控制檢查，這樣本機使用者就可以使用特製的系統呼叫序列，將金鑰新增至只具有該 keyring 搜尋權限 (而非寫入權限) 的 keyring，此問題與 construct_get_dest_keyring() in security/keys/request_key.c 有關。
    (CVE-2017-17807)

  - 在 Linux 核心 4.14.8 及其之前版本中，kernel/bpf/verifier.c 會忽略無法連線的程式碼，即使 JIT 編譯器仍會處理該程式碼。本機使用者可能會利用這種行為 (被認為是一種不當分支剪除邏輯問題) 來造成拒絕服務。(CVE-2017-17862)

  - 在 Linux 核心 4.14.13 之前版本中，crypto/pcrypt.c 未正確處理釋放執行個體，能夠存取 AF_ALG 式 AEAD 介面 (CONFIG_CRYPTO_USER_API_AEAD) 和 pcrypt (CONFIG_CRYPTO_PCRYPT) 的本機使用者因而可以透過執行特製系統呼叫序列的方式來造成拒絕服務 (不正確指標的 kfree)，或可能造成其他不明影響。(CVE-2017-18075)

  4.14.3 版之前的 Linux 核心中，drivers/md/dm.c 中的 dm_get_from_kobject 函式允許本機使用者在創建和刪除 DM 裝置期間利用 __dm_destroy 的爭用條件引致拒絕服務 (BUG)。(CVE-2017-18203)

  - 在 4.14.2 之前的 Linux 核心中，fs/ocfs2/file.c 的 ocfs2_setattr 函式允許本機使用者透過 DIO 要求引致拒絕服務 (鎖死)。(CVE-2017-18204)

  4.14.4 之前 Linux 核心中的 madvise_willneed 函式讓本機使用者得以觸發 MADVISE_WILLNEED 的使用 (以進行 DAX 對應)，來引致拒絕服務 (無限迴圈)。
    (CVE-2017-18208)

  模擬系統呼叫指示時，4.12 之前的 Linux 核心的 KVM 模組在 EFLAGS 中處理陷阱旗標 (TF) 的方式中發現一個缺陷，這導致客體堆疊中發生除錯例外狀況 (#DB)。客體中的使用者/處理程序可利用此缺陷提升其在客體內的權限。Linux 客體不受此弱點影響。(CVE-2017-7518)

  - 至少是在 v4.8 以上 Linux 核心版本 (可能還有更早版本) 中，bnx2x 網卡驅動程式中包含一個輸出驗證不足的弱點，該弱點可能導致 DoS ( 網卡韌體宣告會致使該卡離線)。若要惡意利用此攻擊，該攻擊者必須傳送非常大容量的特製封包至 bnx2x 卡。此作業可在不受信任的來賓 VM 上執行。
    (CVE-2018-1000026)

  - 在 3.2 之前的 Linux 核心中，rds_message_alloc_sgs() 函式不會驗證 DMA 頁面配置期間使用的值，進而導致堆積型超出邊界寫入 (與 net/rds/rdma.c 中的 rds_rdma_extra_size 函式相關)。(CVE-2018-5332)

  - 在 Linux 核心 4.14.13 及之前版本中，net/rds/rdma.c 的  rds_cmsg_atomic 函式會不當處理頁面固定失敗或提供無效位址的情況，從而導致 rds_atomic_free_op NULL 指標解除參照。(CVE-2018-5333)

  在 4.14.13 及之前版本的 Linux 核心中，drivers/block/loop.c 不會正確處理 lo_release 序列化，這會允許攻擊者引致拒絕服務 (__lock_acquire 釋放後使用)，或可能造成其他不明影響。(CVE-2018-5344)

  在 4.14.15 之前的 Linux 核心中，kernel / futex.c 的 futex_requeue 函式可能會允許攻擊者透過觸發負的 wake 或 requeue 值，引致拒絕服務 (整數溢位) 或可能造成其他不明影響。(CVE-2018-6927)

  - 在 4.14.7 之前的 Linux 核心中， net/rds/rdma.c __rds_rdma_map() 函式存在 NULL 指標解除參照弱點，這會允許本機攻擊者引致系統錯誤和拒絕服務；這其實與 RDS_GET_MR 和 RDS_GET_MR_FOR_DEST 相關。(CVE-2018-7492)

  -在 Linux 核心4.15.8 及之前版本中，drivers/net/phy/mdio-bcm-unimac.c 的 unimac_mdio_probe 函式未驗證特定資源的可用性，本機使用者可藉此造成拒絕服務 (NULL 指標解除參照)。(CVE-2018-8043)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A vulnerability was found in the key management     subsystem of the Linux kernel. An update on an     uninstantiated key could cause a kernel panic, leading     to denial of service (DoS).(CVE-2017-15299)

  - The usb_serial_console_disconnect function in     drivers/usb/serial/console.c in the Linux kernel before     4.13.8 allows local users to cause a denial of service     (use-after-free and system crash) or possibly have     unspecified other impact via a crafted USB device,     related to disconnection and failed     setup.(CVE-2017-16525)

  - drivers/uwb/uwbd.c in the Linux kernel before 4.13.6     allows local users to cause a denial of service     (general protection fault and system crash) or possibly     have unspecified other impact via a crafted USB     device.(CVE-2017-16526)

  - drivers/usb/core/config.c in the Linux kernel before     4.13.6 allows local users to cause a denial of service     (out-of-bounds read and system crash) or possibly have     unspecified other impact via a crafted USB device,     related to the USB_DT_INTERFACE_ASSOCIATION     descriptor.(CVE-2017-16531)

  - The get_endpoints function in     drivers/usb/misc/usbtest.c in the Linux kernel through     4.13.11 allows local users to cause a denial of service     (NULL pointer dereference and system crash) or possibly     have unspecified other impact via a crafted USB     device.(CVE-2017-16532)

  - The usbhid_parse function in     drivers/hid/usbhid/hid-core.c in the Linux kernel     before 4.13.8 allows local users to cause a denial of     service (out-of-bounds read and system crash) or     possibly have unspecified other impact via a crafted     USB device.(CVE-2017-16533)

  - The uas driver in the Linux kernel before 4.13.6 allows     local users to cause a denial of service (out-of-bounds     read and system crash) or possibly have unspecified     other impact via a crafted USB device, related to     drivers/usb/storage/uas-detect.h and     drivers/usb/storage/uas.c.(CVE-2017-16530)

  - The usb_get_bos_descriptor function in     drivers/usb/core/config.c in the Linux kernel before     4.13.10 allows local users to cause a denial of service     (out-of-bounds read and system crash) or possibly have     unspecified other impact via a crafted USB     device.(CVE-2017-16535)

  - A flaw was found that sound/core/timer.c in the Linux     kernel before 4.11.5 is vulnerable to a data race in     the ALSA /dev/snd/timer driver resulting in local users     being able to read information belonging to other     users. Uninitialized memory contents may be disclosed     when a read and an ioctl happen at the same     time.(CVE-2017-1000380)

  - The imon_probe function in drivers/media/rc/imon.c in     the Linux kernel through 4.13.11 allows local users to     cause a denial of service (NULL pointer dereference and     system crash) or possibly have unspecified other impact     via a crafted USB device.(CVE-2017-16537)

  - drivers/media/usb/dvb-usb-v2/lmedm04.c in the Linux     kernel through 4.13.11 allows local users to cause a     denial of service (general protection fault and system     crash) or possibly have unspecified other impact via a     crafted USB device, related to a missing warm-start     check and incorrect attach timing     (dm04_lme2510_frontend_attach versus     dm04_lme2510_tuner).(CVE-2017-16538)

  - The cx231xx_usb_probe function in     drivers/media/usb/cx231xx/cx231xx-cards.c in the Linux     kernel through 4.13.11 allows local users to cause a     denial of service (NULL pointer dereference and system     crash) or possibly have unspecified other impact via a     crafted USB device.(CVE-2017-16536)

  - The ims_pcu_get_cdc_union_desc function in     drivers/input/misc/ims-pcu.c in the Linux kernel     through 4.13.11 allows local users to cause a denial of     service (ims_pcu_parse_cdc_data out-of-bounds read and     system crash) or possibly have unspecified other impact     via a crafted USB device.(CVE-2017-16645)

  - The parse_hid_report_descriptor function in     drivers/input/tablet/gtco.c in the Linux kernel before     4.13.11 allows local users to cause a denial of service     (out-of-bounds read and system crash) or possibly have     unspecified other impact via a crafted USB     device.(CVE-2017-16643)

  - The hdpvr_probe function in     drivers/media/usb/hdpvr/hdpvr-core.c in the Linux     kernel through 4.13.11 allows local users to cause a     denial of service (improper error handling and system     crash) or possibly have unspecified other impact via a     crafted USB device.(CVE-2017-16644)

  - The cdc_parse_cdc_header function in     drivers/usb/core/message.c in the Linux kernel before     4.13.6 allows local users to cause a denial of service     (out-of-bounds read and system crash) or possibly have     unspecified other impact via a crafted USB     device.(CVE-2017-16534)

  - The qmi_wwan_bind function in     drivers/net/usb/qmi_wwan.c in the Linux kernel through     4.13.11 allows local users to cause a denial of service     (divide-by-zero error and system crash) or possibly     have unspecified other impact via a crafted USB     device.(CVE-2017-16650)

  - The usbnet_generic_cdc_bind function in     drivers/net/usb/cdc_ether.c in the Linux kernel through     4.13.11 allows local users to cause a denial of service     (divide-by-zero error and system crash) or possibly     have unspecified other impact via a crafted USB     device.(CVE-2017-16649)

  - The snd_usb_create_streams function in sound/usb/card.c     in the Linux kernel before 4.13.6 allows local users to     cause a denial of service (out-of-bounds read and     system crash) or possibly have unspecified other impact     via a crafted USB device.(CVE-2017-16529)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3619-1 advisory.

    Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel improperly     performed sign extension in some situations. A local attacker could use this to cause a denial of service     (system crash) or possibly execute arbitrary code. (CVE-2017-16995)

    It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM     subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash)     or possibly execute arbitrary code. (CVE-2017-0861)

    It was discovered that the KVM implementation in the Linux kernel allowed passthrough of the diagnostic     I/O port 0x80. An attacker in a guest VM could use this to cause a denial of service (system crash) in the     host OS. (CVE-2017-1000407)

    It was discovered that an information disclosure vulnerability existed in the ACPI implementation of the     Linux kernel. A local attacker could use this to expose sensitive information (kernel memory addresses).
    (CVE-2017-11472)

    It was discovered that a use-after-free vulnerability existed in the network namespaces implementation in     the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly     execute arbitrary code. (CVE-2017-15129)

    It was discovered that the Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel     contained a use-after-free when handling device removal. A physically proximate attacker could use this to     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16528)

    Andrey Konovalov discovered that the usbtest device driver in the Linux kernel did not properly validate     endpoint metadata. A physically proximate attacker could use this to cause a denial of service (system     crash). (CVE-2017-16532)

    Andrey Konovalov discovered that the Conexant cx231xx USB video capture driver in the Linux kernel did not     properly validate interface descriptors. A physically proximate attacker could use this to cause a denial     of service (system crash). (CVE-2017-16536)

    Andrey Konovalov discovered that the SoundGraph iMON USB driver in the Linux kernel did not properly     validate device metadata. A physically proximate attacker could use this to cause a denial of service     (system crash). (CVE-2017-16537)

    Andrey Konovalov discovered that the IMS Passenger Control Unit USB driver in the Linux kernel did not     properly validate device descriptors. A physically proximate attacker could use this to cause a denial of     service (system crash). (CVE-2017-16645)

    Andrey Konovalov discovered that the DiBcom DiB0700 USB DVB driver in the Linux kernel did not properly     handle detach events. A physically proximate attacker could use this to cause a denial of service (system     crash). (CVE-2017-16646)

    Andrey Konovalov discovered that the CDC USB Ethernet driver did not properly validate device descriptors.
    A physically proximate attacker could use this to cause a denial of service (system crash).
    (CVE-2017-16649)

    Andrey Konovalov discovered that the QMI WWAN USB driver did not properly validate device descriptors. A     physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16650)

    It was discovered that the USB Virtual Host Controller Interface (VHCI) driver in the Linux kernel     contained an information disclosure vulnerability. A physically proximate attacker could use this to     expose sensitive information (kernel memory). (CVE-2017-16911)

    It was discovered that the USB over IP implementation in the Linux kernel did not validate endpoint     numbers. A remote attacker could use this to cause a denial of service (system crash). (CVE-2017-16912)

    It was discovered that the USB over IP implementation in the Linux kernel did not properly validate     CMD_SUBMIT packets. A remote attacker could use this to cause a denial of service (excessive memory     consumption). (CVE-2017-16913)

    It was discovered that the USB over IP implementation in the Linux kernel contained a NULL pointer     dereference error. A remote attacker could use this to cause a denial of service (system crash).
    (CVE-2017-16914)

    It was discovered that the HugeTLB component of the Linux kernel did not properly handle holes in hugetlb     ranges. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-16994)

    It was discovered that the netfilter component of the Linux did not properly restrict access to the     connection tracking helpers list. A local attacker could use this to bypass intended access restrictions.
    (CVE-2017-17448)

    It was discovered that the netlink subsystem in the Linux kernel did not properly restrict observations of     netlink messages to the appropriate net namespace. A local attacker could use this to expose sensitive     information (kernel netlink traffic). (CVE-2017-17449)

    It was discovered that the netfilter passive OS fingerprinting (xt_osf) module did not properly perform     access control checks. A local attacker could improperly modify the system-wide OS fingerprint list.
    (CVE-2017-17450)

    It was discovered that the core USB subsystem in the Linux kernel did not validate the number of     configurations and interfaces in a device. A physically proximate attacker could use this to cause a     denial of service (system crash). (CVE-2017-17558)

    Dmitry Vyukov discovered that the KVM implementation in the Linux kernel contained an out-of-bounds read     when handling memory-mapped I/O. A local attacker could use this to expose sensitive information.
    (CVE-2017-17741)

    It was discovered that the Salsa20 encryption algorithm implementations in the Linux kernel did not     properly handle zero-length inputs. A local attacker could use this to cause a denial of service (system     crash). (CVE-2017-17805)

    It was discovered that the HMAC implementation did not validate the state of the underlying cryptographic     hash algorithm. A local attacker could use this to cause a denial of service (system crash) or possibly     execute arbitrary code. (CVE-2017-17806)

    It was discovered that the keyring implementation in the Linux kernel did not properly check permissions     when a key request was performed on a task's default keyring. A local attacker could use this to add keys     to unauthorized keyrings. (CVE-2017-17807)

    Alexei Starovoitov discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel     contained a branch-pruning logic issue around unreachable code. A local attacker could use this to cause a     denial of service. (CVE-2017-17862)

    It was discovered that the parallel cryptography component of the Linux kernel incorrectly freed kernel     memory. A local attacker could use this to cause a denial of service (system crash) or possibly execute     arbitrary code. (CVE-2017-18075)

    It was discovered that a race condition existed in the Device Mapper component of the Linux kernel. A     local attacker could use this to cause a denial of service (system crash). (CVE-2017-18203)

    It was discovered that a race condition existed in the OCFS2 file system implementation in the Linux     kernel. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2017-18204)

    It was discovered that an infinite loop could occur in the madvise(2) implementation in the Linux kernel     in certain circumstances. A local attacker could use this to cause a denial of service (system hang).
    (CVE-2017-18208)

    Andy Lutomirski discovered that the KVM implementation in the Linux kernel was vulnerable to a debug     exception error when single-stepping through a syscall. A local attacker in a non-Linux guest vm could     possibly use this to gain administrative privileges in the guest vm. (CVE-2017-7518)

    It was discovered that the Broadcom NetXtremeII ethernet driver in the Linux kernel did not properly     validate Generic Segment Offload (GSO) packet sizes. An attacker could use this to cause a denial of     service (interface unavailability). (CVE-2018-1000026)

    It was discovered that the Reliable Datagram Socket (RDS) implementation in the Linux kernel contained an     out-of-bounds write during RDMA page allocation. An attacker could use this to cause a denial of service     (system crash) or possibly execute arbitrary code. (CVE-2018-5332)

    Mohamed Ghannam discovered a null pointer dereference in the RDS (Reliable Datagram Sockets) protocol     implementation of the Linux kernel. A local attacker could use this to cause a denial of service (system     crash). (CVE-2018-5333)

     discovered that a race condition existed in loop block device implementation in the Linux     kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute     arbitrary code. (CVE-2018-5344)

    It was discovered that an integer overflow error existed in the futex implementation in the Linux kernel.
    A local attacker could use this to cause a denial of service (system crash). (CVE-2018-6927)

    It was discovered that a NULL pointer dereference existed in the RDS (Reliable Datagram Sockets) protocol     implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system     crash). (CVE-2018-7492)

    It was discovered that the Broadcom UniMAC MDIO bus controller driver in the Linux kernel did not properly     validate device resources. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2018-8043)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
108834	Ubuntu 17.10 : linux vulnerabilities (USN-3617-1)	Nessus	Ubuntu Local Security Checks	2018/4/4	2024/11/21	high
104911	EulerOS 2.0 SP2 : kernel (EulerOS-SA-2017-1292)	Nessus	Huawei Local Security Checks	2017/12/1	2021/1/6	medium
112113	Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3754-1)	Nessus	Ubuntu Local Security Checks	2018/8/24	2024/8/27	critical
124822	EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1499)	Nessus	Huawei Local Security Checks	2019/5/13	2022/5/20	high
105951	Fedora 27 : kernel (2017-abda708cee)	Nessus	Fedora Local Security Checks	2018/1/15	2025/11/4	medium
109829	Oracle Linux 6 / 7：Unbreakable Enterprise 核心 (ELSA-2018-4109)	Nessus	Oracle Linux Local Security Checks	2018/5/16	2024/10/23	high
105116	Debian DLA-1200-1：linux 安全性更新 (KRACK)	Nessus	Debian Local Security Checks	2017/12/11	2021/1/11	high
108878	Ubuntu 14.04 LTS：Linux 核心 (Xenial HWE) 弱點 (USN-3619-2)	Nessus	Ubuntu Local Security Checks	2018/4/6	2024/8/27	high
104910	EulerOS 2.0 SP1 : kernel (EulerOS-SA-2017-1291)	Nessus	Huawei Local Security Checks	2017/12/1	2021/1/6	medium
108842	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3619-1)	Nessus	Ubuntu Local Security Checks	2018/4/5	2024/8/27	high

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