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

  - An information-leak vulnerability was found in the     kernel when it truncated a file to a smaller size which     consisted of an inline extent that was compressed. The     data between the new file size and the old file size     was not discarded and the number of bytes used by the     inode were not correctly decremented, which gave the     wrong report for callers of the stat(2) syscall. This     wasted metadata space and allowed for the truncated     data to be leaked, and data corruption or loss to     occur. A caller of the clone ioctl could exploit this     flaw by using only standard file-system operations     without root access to read the truncated     data.(CVE-2015-8374)

  - A flaw was found in the Linux kernel's key management     system where it was possible for an attacker to     escalate privileges or crash the machine. If a user key     gets negatively instantiated, an error code is cached     in the payload area. A negatively instantiated key may     be then be positively instantiated by updating it with     valid data. However, the -i1/4zupdate key type method     must be aware that the error code may be     there.(CVE-2015-8539)

  - A NULL pointer dereference flaw was found in the way     the Linux kernel's network subsystem handled socket     creation with an invalid protocol identifier. A local     user could use this flaw to crash the     system.(CVE-2015-8543)

  - An out-of-bounds flaw was found in the kernel, where     the length of the sockaddr parameter was not checked in     the pptp_bind() and pptp_connect() functions. As a     result, more kernel memory was copied out than     required, leaking information from the kernel stack     (including kernel addresses). A local system user could     exploit this flaw to bypass kernel ASLR or leak other     information.(CVE-2015-8569)

  - An out-of-bounds flaw was found in the kernel, where     the sco_sock_bind() function (bluetooth/sco) did not     check the length of its sockaddr parameter. As a     result, more kernel memory was copied out than     required, leaking information from the kernel stack     (including kernel addresses). A local user could     exploit this flaw to bypass kernel ASLR or leak other     information.(CVE-2015-8575)

  - The ovl_setattr function in fs/overlayfs/inode.c in the     Linux kernel through 4.3.3 attempts to merge distinct     setattr operations, which allows local users to bypass     intended access restrictions and modify the attributes     of arbitrary overlay files via a crafted     application.(CVE-2015-8660)

  - A NULL pointer dereference flaw was found in the Linux     kernel: the NFSv4.2 migration code improperly     initialized the kernel structure. A local,     authenticated user could use this flaw to cause a panic     of the NFS client (denial of service).(CVE-2015-8746)

  - A race condition flaw was found in the way the Linux     kernel's SCTP implementation handled sctp_accept()     during the processing of heartbeat timeout events. A     remote attacker could use this flaw to prevent further     connections to be accepted by the SCTP server running     on the system, resulting in a denial of     service.(CVE-2015-8767)

  - An infinite-loop flaw was found in the kernel. When a     local user calls the sys_writev syscall with a     specially crafted sequence of iov structs, the     fuse_fill_write_pages kernel function might never     terminate, instead continuing in a tight loop. This     process cannot be terminated and requires a     reboot.(CVE-2015-8785)

  - A NULL-pointer dereference vulnerability was found in     the Linux kernel's TCP stack, in     net/netfilter/nf_nat_redirect.c in the     nf_nat_redirect_ipv4() function. A remote,     unauthenticated user could exploit this flaw to create     a system crash (denial of service).(CVE-2015-8787)

  - A use-after-free flaw was found in the CXGB3 kernel     driver when the network was considered to be congested.
    The kernel incorrectly misinterpreted the congestion as     an error condition and incorrectly freed or cleaned up     the socket buffer (skb). When the device then sent the     skb's queued data, these structures were referenced. A     local attacker could use this flaw to panic the system     (denial of service) or, with a local account, escalate     their privileges.(CVE-2015-8812)

  - The hub_activate function in drivers/usb/core/hub.c in     the Linux kernel before 4.3.5 does not properly     maintain a hub-interface data structure, which allows     physically proximate attackers to cause a denial of     service (invalid memory access and system crash) or     possibly have unspecified other impact by unplugging a     USB hub device.(CVE-2015-8816)

  - The ioresources_init function in kernel/resource.c in     the Linux kernel through 4.7, as used in Android before     2016-08-05 on Nexus 6 and 7 (2013) devices, uses weak     permissions for /proc/iomem, which allows local users     to obtain sensitive information by reading this file,     aka Android internal bug 28814213 and Qualcomm internal     bug CR786116. NOTE: the permissions may be intentional     in most non-Android contexts.(CVE-2015-8944)

  - 'A flaw was found in the Linux kernel's implementation     of overlayfs. An attacker can leak file resources in     the system by opening a large file with write     permissions on a overlay filesystem that is     insufficient to deal with the size of the write.

  - When unmounting the underlying device, the system is     unable to free an inode and this will consume     resources. Repeating this for all available inodes and     memory will create a denial of service     situation.(CVE-2015-8953)'

  - The rfcomm_sock_bind function in     net/bluetooth/rfcomm/sock.c in the Linux kernel before     4.2 allows local users to obtain sensitive information     or cause a denial of service (NULL pointer dereference)     via vectors involving a bind system call on a Bluetooth     RFCOMM socket.(CVE-2015-8956)

  - A flaw was found in the ext4 subsystem. This     vulnerability is a use after free vulnerability was     found in __ext4_journal_stop(). Attackers could abuse     this to allow any code which attempts to deal with the     journal failure to be mishandled or not fail at all.
    This could lead to data corruption or     crashes.(CVE-2015-8961)

  - A flaw was found in the Linux kernel SCSI subsystem,     which allowed a local user to gain privileges or cause     a denial of service (memory corruption and system     crash) by issuing an SG_IO ioctl call while a device     was being detached.(CVE-2015-8962)

  - Race condition in kernel/events/core.c in the Linux     kernel before 4.4 allows local users to gain privileges     or cause a denial of service via use-after-free     vulnerability by leveraging incorrect handling of an     swevent data structure during a CPU unplug     operation.(CVE-2015-8963)

  - The tty_set_termios_ldisc() function in     'drivers/tty/tty_ldisc.c' in the Linux kernel before     4.5 allows local users to obtain sensitive information     from kernel memory by reading a tty data     structure.(CVE-2015-8964)

  - The lrw_crypt() function in 'crypto/lrw.c' in the Linux     kernel before 4.5 allows local users to cause a system     crash and a denial of service by the NULL pointer     dereference via accept(2) system call for AF_ALG socket     without calling setkey() first to set a cipher     key.(CVE-2015-8970)

  - It was found that kernel/events/core.c in the Linux     kernel mishandles counter grouping, which allows local     users to gain privileges via a crafted application,     related to the perf_pmu_register and perf_event_open     functions.(CVE-2015-9004)

  - A use-after-free flaw was discovered in the Linux     kernel's tty subsystem, which allows for the disclosure     of uncontrolled memory location and possible kernel     panic. The information leak is caused by a race     condition when attempting to set and read the tty line     discipline. A local attacker could use the TIOCSETD     (via tty_set_ldisc ) to switch to a new line discipline     a concurrent call to a TIOCGETD ioctl performing a read     on a given tty could then access previously allocated     memory. Up to 4 bytes could be leaked when querying the     line discipline or the kernel could panic with a     NULL-pointer dereference.(CVE-2016-0723)

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.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leak.

  - CVE-2015-7513     It was discovered that a local user permitted to use the     x86 KVM subsystem could configure the PIT emulation to     cause a denial of service (crash).

  - CVE-2015-7550     Dmitry Vyukov discovered a race condition in the keyring     subsystem that allows a local user to cause a denial of     service (crash).

  - CVE-2015-8543     It was discovered that a local user permitted to create     raw sockets could cause a denial-of-service by     specifying an invalid protocol number for the socket.
    The attacker must have the CAP_NET_RAW capability.

  - CVE-2015-8550     Felix Wilhelm of ERNW discovered that the Xen PV backend     drivers may read critical data from shared memory     multiple times. This flaw can be used by a guest kernel     to cause a denial of service (crash) on the host, or     possibly for privilege escalation.

  - CVE-2015-8551 / CVE-2015-8552     Konrad Rzeszutek Wilk of Oracle discovered that the Xen     PCI backend driver does not adequately validate the     device state when a guest configures MSIs. This flaw can     be used by a guest kernel to cause a denial of service     (crash or disk space exhaustion) on the host.

  - CVE-2015-8569     Dmitry Vyukov discovered a flaw in the PPTP sockets     implementation that leads to an information leak to     local users.

  - CVE-2015-8575     David Miller discovered a flaw in the Bluetooth SCO     sockets implementation that leads to an information leak     to local users.

  - CVE-2015-8709     Jann Horn discovered a flaw in the permission checks for     use of the ptrace feature. A local user who has the     CAP_SYS_PTRACE capability within their own user     namespace could use this flaw for privilege escalation     if a more privileged process ever enters that user     namespace. This affects at least the LXC system.

In addition, this update fixes some regressions in the previous update :

  - #808293     A regression in the UDP implementation prevented     freeradius and some other applications from receiving     data.

  - #808602 / #808953

    A regression in the USB XHCI driver prevented use of     some devices in USB 3 SuperSpeed ports.

  - #808973

    A fix to the radeon driver interacted with an existing     bug to cause a crash at boot when using some AMD/ATI     graphics cards. This issue only affects wheezy.

It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). (CVE-2015-7513)

Guoyong Gang discovered that the ppp implementation in the Linux kernel did not ensure that certain slot numbers are valid. A local attacker with the privilege to call ioctl() on /dev/ppp could cause a denial of service (system crash). (CVE-2015-7799)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS) implementation in the Linux kernel had a race condition when checking whether a socket was bound or not. A local attacker could use this to cause a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel incorrectly handled compressed inline extants on truncation. A local attacker could use this to expose sensitive information.
(CVE-2015-8374)

Guoyong Gang discovered that the Linux kernel networking implementation did not validate protocol identifiers for certain protocol families, A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges.
(CVE-2015-8543)

Dmitry Vyukov discovered that the pptp implementation in the Linux kernel did not verify an address length when setting up a socket. A local attacker could use this to craft an application that exposed sensitive information from kernel memory. (CVE-2015-8569)

David Miller discovered that the Bluetooth implementation in the Linux kernel did not properly validate the socket address length for Synchronous Connection-Oriented (SCO) sockets. A local attacker could use this to expose sensitive information. (CVE-2015-8575)

It was discovered that the Linux kernel's Filesystem in Userspace (FUSE) implementation did not handle initial zero length segments properly. A local attacker could use this to cause a denial of service (unkillable task). (CVE-2015-8785).

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.

It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). (CVE-2015-7513)

It was discovered that the Linux kernel keyring subsystem contained a race between read and revoke operations. A local attacker could use this to cause a denial of service (system crash). (CVE-2015-7550)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS) implementation in the Linux kernel had a race condition when checking whether a socket was bound or not. A local attacker could use this to cause a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel incorrectly handled compressed inline extants on truncation. A local attacker could use this to expose sensitive information.
(CVE-2015-8374)

Guoyong Gang discovered that the Linux kernel networking implementation did not validate protocol identifiers for certain protocol families, A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges.
(CVE-2015-8543)

Dmitry Vyukov discovered that the pptp implementation in the Linux kernel did not verify an address length when setting up a socket. A local attacker could use this to craft an application that exposed sensitive information from kernel memory. (CVE-2015-8569)

David Miller discovered that the Bluetooth implementation in the Linux kernel did not properly validate the socket address length for Synchronous Connection-Oriented (SCO) sockets. A local attacker could use this to expose sensitive information. (CVE-2015-8575)

It was discovered that the netfilter Network Address Translation (NAT) implementation did not ensure that data structures were initialized when handling IPv4 addresses. An attacker could use this to cause a denial of service (system crash). (CVE-2015-8787).

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.

The remote Debian host is running a version of the Linux kernel prior to 3.2.73-2+deb7u1 on Debian 7 or is running a version of the Linux kernel prior to 3.16.7-ckt20-1+deb8u1 on Debian 8. It is, therefore, affected by the following vulnerabilities :

  - A use-after-free error exists in the unix_dgram_poll()     function within file net/unix/af_unix.c. A local     attacker can exploit this, via specially crafted     epoll_ctl calls, to cause a denial of service condition     or bypass AF_UNIX socket permissions. (CVE-2013-7446)

  - A NULL pointer dereference flaw exists in the     slhc_init() function within file drivers/net/slip/slhc.c     due to improper validation of slot numbers. A local     attacker can exploit this, via specially crafted     PPPIOCSMAXCID IOCTL calls, to cause a denial of service     condition. (CVE-2015-7799)

  - A flaw exists in the usbvision driver that allows a     local attacker, via a nonzero bInterfaceNumber value in     a USB device descriptor, to cause a kernel panic,     resulting in a denial of service condition.
    (CVE-2015-7833)

  - An infinite loop condition exists in the KVM subsystem     on some unspecified CPU chipsets. A local attacker who     has sufficient privileges within a virtual guest OS can     exploit this issue, by triggering many debug exceptions,     to cause a denial of service condition. (CVE-2015-8104)

  - A flaw exists in the truncate_space_check() function     within file /fs/btrfs/inode.c due to improper handling     of compressed file extents. A local attacker can exploit     this, via a clone action, to disclose sensitive     pre-truncation information from a file. (CVE-2015-8374)

  - A NULL pointer dereference flaw exists in the     inet_autobind() function within file net/ipv4/af_inet.c     when handling connection attempts via IPv6. A local     attacker can exploit this, via a specially crafted     SOCK_RAW application that makes use of CLONE_NEWUSER     support, to cause a denial of service condition or     possibly gain elevated privileges. (CVE-2015-8543)

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

  - Several Moderate and Low impact security issues were     found in the Linux kernel. Space precludes documenting     each of these issues in this advisory. Refer to the CVE     links in the References section for a description of     each of these vulnerabilities. (CVE-2015-8543)

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.

Security Fix(es) :

  - It was found that the Linux kernel's IPv6 implementation     mishandled socket options. A local attacker could abuse     concurrent access to the socket options to escalate     their privileges, or cause a denial of service     (use-after-free and system crash) via a crafted sendmsg     system call. (CVE-2016-3841, Important)

(CVE-2013-4312, CVE-2015-8374, CVE-2015-8543, CVE-2015-8812, CVE-2015-8844, CVE-2015-8845, CVE-2016-2053, CVE-2016-2069, CVE-2016-2847, CVE-2016-3156, CVE-2016-4581, CVE-2016-4794, CVE-2016-5412, CVE-2016-5828, CVE-2016-5829, CVE-2016-6136, CVE-2016-6198, CVE-2016-6327, CVE-2016-6480, CVE-2015-8746, CVE-2015-8956, CVE-2016-2117, CVE-2016-2384, CVE-2016-3070, CVE-2016-3699, CVE-2016-4569, CVE-2016-4578)

Additional Changes :

The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2017-0057 for details.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
124813	EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1489)	Nessus	Huawei Local Security Checks	2019/5/13	2024/5/23	critical
87741	Debian DSA-3434-1 : linux - security update	Nessus	Debian Local Security Checks	2016/1/6	2021/1/11	high
88518	Ubuntu 12.04 LTS : linux vulnerabilities (USN-2886-1)	Nessus	Ubuntu Local Security Checks	2016/2/2	2023/1/17	high
88526	Ubuntu 15.10 : linux-raspi2 vulnerabilities (USN-2890-3)	Nessus	Ubuntu Local Security Checks	2016/2/2	2023/1/17	critical
92679	Debian DSA-3426-1 : Linux Security Update	Nessus	Debian Local Security Checks	2016/8/2	2026/1/29	high
99787	EulerOS 2.0 SP1 : kernel (EulerOS-SA-2016-1024)	Nessus	Huawei Local Security Checks	2017/5/1	2025/12/22	high
95841	Scientific Linux Security Update : kernel on SL7.x x86_64 (20161103)	Nessus	Scientific Linux Local Security Checks	2016/12/15	2026/1/14	critical
99163	OracleVM 3.3 : Unbreakable / etc (OVMSA-2017-0057) (Dirty COW)	Nessus	OracleVM Local Security Checks	2017/4/3	2025/12/26	critical

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