This update for xen fixes several issues. These security issues were fixed :

  - CVE-2017-7980: An out-of-bounds r/w access issues in the     Cirrus CLGD 54xx VGA Emulator support allowed privileged     user inside guest to use this flaw to crash the Qemu     process resulting in DoS or potentially execute     arbitrary code on a host with privileges of Qemu process     on the host (bsc#1035483).

  - A malicious 64-bit PV guest may be able to access all of     system memory, allowing for all of privilege escalation,     host crashes, and information leaks by placing a IRET     hypercall in the middle of a multicall batch (XSA-213,     bsc#1034843)

  - A malicious pair of guests may be able to access all of     system memory, allowing for all of privilege escalation,     host crashes, and information leaks because of a missing     check when transfering pages via GNTTABOP_transfer     (XSA-214, bsc#1034844).

  - Incorrect checks when handling exceptions allowed a     malicious or buggy 64-bit PV guest to modify part of a     physical memory page not belonging to it, potentially     allowing for all of privilege escalation, host or other     guest crashes, and information leaks (XSA-215,     bsc#1034845)

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034994).

The update package also includes non-security fixes. See advisory for details.

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

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:1206 advisory.

    Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm package provides the user-space component for running virtual machines that     use KVM.

    Security Fix(es):

    * A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver     support; the issue could occur when a VNC client attempted to update its display after a VGA operation is     performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU     process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.
    (CVE-2016-9603)

    * An out-of-bounds r/w access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The     vulnerability could occur while copying VGA data via various bitblt functions. A privileged user inside a     guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host     with privileges of the QEMU process. (CVE-2017-7980)

    * An out-of-bounds memory access issue was found in QEMU's VNC display driver support. The vulnerability     could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A     user/process inside a guest could use this flaw to crash the QEMU process, resulting in a denial of     service. (CVE-2017-2633)

    * An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The     vulnerability could occur while copying VGA data using bitblt functions (for example,     cirrus_bitblt_rop_fwd_transp_). A privileged user inside a guest could use this flaw to crash the QEMU     process, resulting in denial of service. (CVE-2017-7718)

    Red Hat would like to thank Jiangxin (PSIRT Huawei Inc.) and Li Qiang (Qihoo 360 Gear Team) for reporting     CVE-2017-7980 and Jiangxin (PSIRT Huawei Inc.) for reporting CVE-2017-7718.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote OracleVM system is missing necessary patches to address critical security updates :

  - kvm-cirrus-avoid-write-only-variables.patch [bz#1444377     bz#1444379]

  -     kvm-cirrus-stop-passing-around-dst-pointers-in-the-blitt     .patch 

  -     kvm-cirrus-stop-passing-around-src-pointers-in-the-blitt     .patch 

  -     kvm-cirrus-fix-off-by-one-in-cirrus_bitblt_rop_bkwd_tran     .patch 

  - kvm-cirrus-fix-PUTPIXEL-macro.patch [bz#1444377     bz#1444379]

  - Resolves: bz#1444377 (CVE-2017-7980 qemu-kvm: Qemu:
    display: cirrus: OOB r/w access issues in bitblt     routines [rhel-6.9.z])

  - Resolves: bz#1444379 (CVE-2017-7980 qemu-kvm-rhev: Qemu:
    display: cirrus: OOB r/w access issues in bitblt     routines [rhel-6.9.z])

  -     kvm-fix-cirrus_vga-fix-OOB-read-case-qemu-Segmentation-f     .patch 

  -     kvm-cirrus-vnc-zap-bitblit-support-from-console-code.pat     ch [bz#1443447 bz#1443449]

  - Resolves: bz#1443447 (CVE-2017-7718 qemu-kvm: Qemu:
    display: cirrus: OOB read access issue [rhel-6.9.z])

  - Resolves: bz#1443449 (CVE-2017-7718 qemu-kvm-rhev: Qemu:
    display: cirrus: OOB read access issue [rhel-6.9.z])

  - Resolves: bz#1447544 (CVE-2016-9603 qemu-kvm-rhev: Qemu:
    cirrus: heap buffer overflow via vnc connection     [rhel-6.9.z])

  - Resolves: bz#1447540 (CVE-2016-9603 qemu-kvm: Qemu:
    cirrus: heap buffer overflow via vnc connection     [rhel-6.9.z])

  - kvm-vns-tls-don-t-use-depricated-gnutls-functions.patch     [bz#1428750]

  - kvm-vnc-apply-display-size-limits.patch [bz#1400438     bz#1425943]

  - Resolves: bz#1400438 (qemu-kvm coredump in     vnc_refresh_server_surface [rhel-6.9.z])

  - Resolves: bz#1425943 (CVE-2017-2633 qemu-kvm-rhev: Qemu:
    VNC: memory corruption due to unchecked resolution limit     [rhel-6.9.z])

  - Resolves: bz#1428750 (Fails to build in brew)

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3289-1 advisory.

    Li Qiang discovered that QEMU incorrectly handled VirtFS directory sharing. A privileged attacker inside     the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-7377,     CVE-2017-8086)

    Jiangxin discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the     guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-7718)

    Li Qiang and Jiangxin discovered that QEMU incorrectly handled the Cirrus VGA device when being used with     a VNC connection. A privileged attacker inside the guest could use this issue to cause QEMU to crash,     resulting in a denial of service, or possibly execute arbitrary code on the host. In the default     installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile.
    (CVE-2017-7980)

    Jiang Xin discovered that QEMU incorrectly handled the audio subsystem. A privileged attacker inside the     guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-8309)

    Jiang Xin discovered that QEMU incorrectly handled the input subsystem. A privileged attacker inside the     guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only     affected Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. (CVE-2017-8379)

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.

The remote host is affected by the vulnerability described in GLSA-201706-03 (QEMU: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in QEMU. Please review the       CVE identifiers referenced below for details.
  Impact :

    A remote attacker might cause a Denial of Service or gain escalated       privileges from a guest VM.
  Workaround :

    There is no known workaround at this time.

An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm package provides the user-space component for running virtual machines that use KVM.

Security Fix(es) :

* A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.
(CVE-2016-9603)

* An out-of-bounds r/w access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data via various bitblt functions. A privileged user inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process. (CVE-2017-7980)

* An out-of-bounds memory access issue was found in QEMU's VNC display driver support. The vulnerability could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user/process inside a guest could use this flaw to crash the QEMU process, resulting in a denial of service. (CVE-2017-2633)

* An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data using bitblt functions (for example, cirrus_bitblt_rop_fwd_transp_). A privileged user inside a guest could use this flaw to crash the QEMU process, resulting in denial of service. (CVE-2017-7718)

Red Hat would like to thank Jiangxin (PSIRT Huawei Inc.) and Li Qiang (Qihoo 360 Gear Team) for reporting CVE-2017-7980 and Jiangxin (PSIRT Huawei Inc.) for reporting CVE-2017-7718.

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

- CVE-2017-7718: cirrus: OOB read access issue (bz     #1443443)

  - CVE-2016-9603: cirrus: heap buffer overflow via vnc     connection (bz #1432040)

  - CVE-2017-7377: 9pfs: fix file descriptor leak (bz     #1437872)

  - CVE-2017-7980: cirrus: OOB r/w access issues in bitblt     (bz #1444372)

  - CVE-2017-8112: vmw_pvscsi: infinite loop in pvscsi_log2     (bz #1445622)

  - CVE-2017-8309: audio: host memory lekage via capture     buffer (bz #1446520)

  - CVE-2017-8379: input: host memory lekage via keyboard     events (bz #1446560)

  - CVE-2017-8380: scsi: megasas: out-of-bounds read in     megasas_mmio_write (bz #1446578)

  - CVE-2017-9060: virtio-gpu: host memory leakage in Virtio     GPU device (bz #1452598)

  - CVE-2017-9310: net: infinite loop in e1000e NIC     emulation (bz #1452623)

  - CVE-2017-9330: usb: ohci: infinite loop due to incorrect     return value (bz #1457699)

  - CVE-2017-9374: usb: ehci host memory leakage during     hotunplug (bz #1459137)

  - CVE-2017-10806: usb-redirect: stack-based buffer     overflow in debug logging (bz #1468497)

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.

This update for qemu fixes several issues. These security issues were fixed :

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-2633: The VNC display driver support was     vulnerable to an out-of-bounds memory access issue. A     user/process inside guest could use this flaw to cause     DoS (bsc#1026612)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-11434: The dhcp_decode function in     slirp/bootp.c allowed local guest OS users to cause a     denial of service (out-of-bounds read) via a crafted     DHCP options string (bsc#1049381)

  - CVE-2017-11334: The address_space_write_continue     function allowed local guest OS privileged users to     cause a denial of service (out-of-bounds access and     guest instance crash) by leveraging use of     qemu_map_ram_ptr to access guest ram block area     (bsc#1048902)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

  - CVE-2017-5973: A infinite loop while doing control     transfer in xhci_kick_epctx allowed privileged user     inside the guest to crash the host process resulting in     DoS (bsc#1025109)

  - CVE-2017-5987: The sdhci_sdma_transfer_multi_blocks     function in hw/sd/sdhci.c allowed local OS guest     privileged users to cause a denial of service (infinite     loop and QEMU process crash) via vectors involving the     transfer mode register during multi block transfer     (bsc#1025311)

  - CVE-2017-6505: The ohci_service_ed_list function allowed     local guest OS users to cause a denial of service     (infinite loop) via vectors involving the number of link     endpoint list descriptors (bsc#1028184)

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028656)

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034908)

  - CVE-2017-7980: An out-of-bounds r/w access issues in the     Cirrus CLGD 54xx VGA Emulator support allowed privileged     user inside guest to use this flaw to crash the Qemu     process resulting in DoS or potentially execute     arbitrary code on a host with privileges of Qemu process     on the host (bsc#1035406)

  - CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest     OS privileged users to cause a denial of service     (infinite loop and CPU consumption) via the message ring     page count (bsc#1036211)

  - CVE-2017-9375: The USB xHCI controller emulator support     was vulnerable to an infinite recursive call loop issue,     which allowed a privileged user inside guest to crash     the Qemu process resulting in DoS (bsc#1042800)

  - CVE-2017-9373: The IDE AHCI Emulation support was     vulnerable to a host memory leakage issue, which allowed     a privileged user inside guest to leak host memory     resulting in DoS (bsc#1042801)

  - CVE-2017-9330: USB OHCI Emulation in qemu allowed local     guest OS users to cause a denial of service (infinite     loop) by leveraging an incorrect return value     (bsc#1042159)

  - CVE-2017-8309: Memory leak in the audio/audio.c allowed     remote attackers to cause a denial of service (memory     consumption) by repeatedly starting and stopping audio     capture (bsc#1037242)

  - CVE-2017-7493: The VirtFS, host directory sharing via     Plan 9 File System(9pfs) support, was vulnerable to an     improper access control issue. It could occur while     accessing virtfs metadata files in mapped-file security     mode. A guest user could have used this flaw to escalate     their privileges inside guest (bsc#1039495)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2017-5579: The 16550A UART serial device emulation     support was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021741)

  - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a NULL pointer     dereference issue which allowed a privileged user inside     guest to crash the Qemu process on the host resulting in     DoS (bsc#1043296)

  - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which     allowed remote attackers to cause a denial of service     (daemon crash) by disconnecting during a     server-to-client reply attempt (bsc#1046636)

  - CVE-2017-10806: Stack-based buffer overflow allowed     local guest OS users to cause a denial of service (QEMU     process crash) via vectors related to logging debug     messages (bsc#1047674)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2017-7377: The v9fs_create and v9fs_lcreate     functions in hw/9pfs/9p.c allowed local guest OS     privileged users to cause a denial of service (file     descriptor or memory consumption) via vectors related to     an already in-use fid (bsc#1032075)

  - CVE-2017-8086: A memory leak in the v9fs_list_xattr     function in hw/9pfs/9p-xattr.c allowed local guest OS     privileged users to cause a denial of service (memory     consumption) via vectors involving the orig_value     variable (bsc#1035950)

  - CVE-2017-7471: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper access control issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1034866)

  - CVE-2016-6834: A infinite loop during packet     fragmentation in the VMWARE VMXNET3 NIC device support     allowed privileged user inside guest to crash the Qemu     instance resulting in DoS (bsc#994418)

  - CVE-2016-6835: Buffer overflow in the VMWARE VMXNET3 NIC     device support, causing an OOB read access (bsc#994605)

  - Fix privilege escalation in TCG mode (bsc#1030624)

The update package also includes non-security fixes. See advisory for details.

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

This update for kvm fixes several issues. These security issues were fixed :

  - CVE-2017-2620: In CIRRUS_BLTMODE_MEMSYSSRC mode the     bitblit copy routine cirrus_bitblt_cputovideo failed to     check the memory region, allowing for an out-of-bounds     write that allows for privilege escalation (bsc#1024972)

  - CVE-2017-2615: An error in the bitblt copy operation     could have allowed a malicious guest administrator to     cause an out of bounds memory access, possibly leading     to information disclosure or privilege escalation     (bsc#1023004)

  - CVE-2016-9776: The ColdFire Fast Ethernet Controller     emulator support was vulnerable to an infinite loop     issue while receiving packets in 'mcf_fec_receive'. A     privileged user/process inside guest could have used     this issue to crash the Qemu process on the host leading     to DoS (bsc#1013285)

  - CVE-2016-9911: The USB EHCI Emulation support was     vulnerable to a memory leakage issue while processing     packet data in 'ehci_init_transfer'. A guest     user/process could have used this issue to leak host     memory, resulting in DoS for the host (bsc#1014111)

  - CVE-2016-9907: The USB redirector usb-guest support was     vulnerable to a memory leakage flaw when destroying the     USB redirector in 'usbredir_handle_destroy'. A guest     user/process could have used this issue to leak host     memory, resulting in DoS for a host (bsc#1014109)

  - CVE-2016-9921: The Cirrus CLGD 54xx VGA Emulator support     was vulnerable to a divide by zero issue while copying     VGA data. A privileged user inside guest could have used     this flaw to crash the process instance on the host,     resulting in DoS (bsc#1014702)

  - CVE-2016-9922: The Cirrus CLGD 54xx VGA Emulator support     was vulnerable to a divide by zero issue while copying     VGA data. A privileged user inside guest could have used     this flaw to crash the process instance on the host,     resulting in DoS (bsc#1014702)

  - CVE-2017-5898: The CCID Card device emulator support was     vulnerable to an integer overflow allowing a privileged     user inside the guest to crash the Qemu process     resulting in DoS (bnc#1023907)

  - CVE-2016-10155: The virtual hardware watchdog     'wdt_i6300esb' was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021129)

  - CVE-2017-5856: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a memory leakage     issue allowing a privileged user to leak host memory     resulting in DoS (bsc#1023053)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028656)

  - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which     allowed remote attackers to cause a denial of service     (daemon crash) by disconnecting during a     server-to-client reply attempt (bsc#1046636)

  - CVE-2017-10806: Stack-based buffer overflow allowed     local guest OS users to cause a denial of service (QEMU     process crash) via vectors related to logging debug     messages (bsc#1047674)

  - CVE-2017-11334: The address_space_write_continue     function allowed local guest OS privileged users to     cause a denial of service (out-of-bounds access and     guest instance crash) by leveraging use of     qemu_map_ram_ptr to access guest ram block area     (bsc#1048902)

  - CVE-2017-11434: The dhcp_decode function in     slirp/bootp.c allowed local guest OS users to cause a     denial of service (out-of-bounds read) via a crafted     DHCP options string (bsc#1049381)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-5579: The 16550A UART serial device emulation     support was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021741)

  - CVE-2017-5973: A infinite loop while doing control     transfer in xhci_kick_epctx allowed privileged user     inside the guest to crash the host process resulting in     DoS (bsc#1025109)

  - CVE-2017-6505: The ohci_service_ed_list function allowed     local guest OS users to cause a denial of service     (infinite loop) via vectors involving the number of link     endpoint list descriptors (bsc#1028184)

  - CVE-2017-7471: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper access control issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1034866)

  - CVE-2017-7493: The VirtFS, host directory sharing via     Plan 9 File System(9pfs) support, was vulnerable to an     improper access control issue. It could occur while     accessing virtfs metadata files in mapped-file security     mode. A guest user could have used this flaw to escalate     their privileges inside guest (bsc#1039495)

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034908)

  - CVE-2017-7980: An out-of-bounds r/w access issues in the     Cirrus CLGD 54xx VGA Emulator support allowed privileged     user inside guest to use this flaw to crash the Qemu     process resulting in DoS or potentially execute     arbitrary code on a host with privileges of Qemu process     on the host (bsc#1035406)

  - CVE-2017-8086: A memory leak in the v9fs_list_xattr     function in hw/9pfs/9p-xattr.c allowed local guest OS     privileged users to cause a denial of service (memory     consumption) via vectors involving the orig_value     variable (bsc#1035950)

  - CVE-2017-8309: Memory leak in the audio/audio.c allowed     remote attackers to cause a denial of service (memory     consumption) by repeatedly starting and stopping audio     capture (bsc#1037242)

  - CVE-2017-9330: USB OHCI Emulation in qemu allowed local     guest OS users to cause a denial of service (infinite     loop) by leveraging an incorrect return value     (bsc#1042159)

  - CVE-2017-9373: The IDE AHCI Emulation support was     vulnerable to a host memory leakage issue, which allowed     a privileged user inside guest to leak host memory     resulting in DoS (bsc#1042801)

  - CVE-2017-9375: The USB xHCI controller emulator support     was vulnerable to an infinite recursive call loop issue,     which allowed a privileged user inside guest to crash     the Qemu process resulting in DoS (bsc#1042800)

  - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a NULL pointer     dereference issue which allowed a privileged user inside     guest to crash the Qemu process on the host resulting in     DoS (bsc#1043296)

  - Fix privilege escalation in TCG mode (bsc#1030624)

The update package also includes non-security fixes. See advisory for details.

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

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:0982 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines     that use KVM in environments managed by Red Hat products.

    Security Fix(es):

    * Quick Emulator (QEMU), built with the Cirrus CLGD 54xx VGA Emulator and the VNC display driver support,     is vulnerable to a heap buffer overflow issue. The issue could occur when a VNC client attempts to update     its display after a VGA operation is performed by a guest. A privileged user/process inside guest could     use this flaw to crash the QEMU process resulting in DoS or, potentially, leverage it to execute arbitrary     code on the host with privileges of the QEMU process. (CVE-2016-9603)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Heap-based buffer overflow in Cirrus CLGD 54xx VGA Emulator in Quick Emulator (Qemu) 2.8 and earlier     allows local guest OS users to execute arbitrary code or cause a denial of service (crash) via vectors     related to a VNC client updating its display after a VGA operation. (CVE-2017-7980)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2017-1696:04 advisory.

    qemu-kvm is an open source virtualizer that provides hardware emulation for     the KVM hypervisor. qemu-kvm acts as a virtual machine monitor together with     the KVM kernel modules, and emulates the hardware for a full system such as     a PC and its assocated peripherals.
    As qemu-kvm requires no host kernel patches to run, it is safe and easy to use.
    Security issues fixed with this release:
    CVE-2017-7718     hw/display/cirrus_vga_rop.h in QEMU (aka Quick Emulator) allows local     guest OS privileged users to cause a denial of service (out-of-bounds     read and QEMU process crash) via vectors related to copying VGA data     via the cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions.
    CVE-2017-7980
    ** RESERVED **     This candidate has been reserved by an organization or individual that     will use it when announcing a new security problem.  When the     candidate has been publicized, the details for this candidate will be     provided.
    Fixed bugs:
    * Previously, guest virtual machines in some cases became unresponsive when the pty back end of a serial     device performed an irregular I/O communication. This update improves the handling of serial I/O on     guests, which prevents the described problem from occurring.

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

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

This update for qemu fixes several issues. These security issues were fixed :

  - CVE-2017-10911: The make_response function in the Linux     kernel allowed guest OS users to obtain sensitive     information from host OS (or other guest OS) kernel     memory by leveraging the copying of uninitialized     padding fields in Xen block-interface response     structures (bsc#1057378).

  - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator     support allowed local guest OS privileged users to cause     a denial of service (NULL pointer dereference and QEMU     process crash) by flushing an empty CDROM device drive     (bsc#1054724).

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-11434: The dhcp_decode function in     slirp/bootp.c allowed local guest OS users to cause a     denial of service (out-of-bounds read) via a crafted     DHCP options string (bsc#1049381)

  - CVE-2017-11334: The address_space_write_continue     function allowed local guest OS privileged users to     cause a denial of service (out-of-bounds access and     guest instance crash) by leveraging use of     qemu_map_ram_ptr to access guest ram block area     (bsc#1048902)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

  - CVE-2017-5973: A infinite loop while doing control     transfer in xhci_kick_epctx allowed privileged user     inside the guest to crash the host process resulting in     DoS (bsc#1025109)

  - CVE-2017-5987: The sdhci_sdma_transfer_multi_blocks     function in hw/sd/sdhci.c allowed local OS guest     privileged users to cause a denial of service (infinite     loop and QEMU process crash) via vectors involving the     transfer mode register during multi block transfer     (bsc#1025311)

  - CVE-2017-6505: The ohci_service_ed_list function allowed     local guest OS users to cause a denial of service     (infinite loop) via vectors involving the number of link     endpoint list descriptors (bsc#1028184)

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028656)

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034908)

  - CVE-2017-7980: An out-of-bounds r/w access issues in the     Cirrus CLGD 54xx VGA Emulator support allowed privileged     user inside guest to use this flaw to crash the Qemu     process resulting in DoS or potentially execute     arbitrary code on a host with privileges of Qemu process     on the host (bsc#1035406)

  - CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest     OS privileged users to cause a denial of service     (infinite loop and CPU consumption) via the message ring     page count (bsc#1036211)

  - CVE-2017-9375: The USB xHCI controller emulator support     was vulnerable to an infinite recursive call loop issue,     which allowed a privileged user inside guest to crash     the Qemu process resulting in DoS (bsc#1042800)

  - CVE-2017-9374: Missing free of 's->ipacket', causes a     host memory leak, allowing for DoS (bsc#1043073)

  - CVE-2017-9373: The IDE AHCI Emulation support was     vulnerable to a host memory leakage issue, which allowed     a privileged user inside guest to leak host memory     resulting in DoS (bsc#1042801)

  - CVE-2017-9330: USB OHCI Emulation in qemu allowed local     guest OS users to cause a denial of service (infinite     loop) by leveraging an incorrect return value     (bsc#1042159)

  - CVE-2017-8379: Memory leak in the keyboard input event     handlers support allowed local guest OS privileged users     to cause a denial of service (host memory consumption)     by rapidly generating large keyboard events     (bsc#1037334)

  - CVE-2017-8309: Memory leak in the audio/audio.c allowed     remote attackers to cause a denial of service (memory     consumption) by repeatedly starting and stopping audio     capture (bsc#1037242)

  - CVE-2017-8380: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to an out-of-bounds     read access issue which allowed a privileged user inside     guest to read host memory resulting in DoS (bsc#1037336)

  - CVE-2017-7493: The VirtFS, host directory sharing via     Plan 9 File System(9pfs) support, was vulnerable to an     improper access control issue. It could occur while     accessing virtfs metadata files in mapped-file security     mode. A guest user could have used this flaw to escalate     their privileges inside guest (bsc#1039495)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2017-5579: The 16550A UART serial device emulation     support was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021741)

  - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a NULL pointer     dereference issue which allowed a privileged user inside     guest to crash the Qemu process on the host resulting in     DoS (bsc#1043296)

  - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which     allowed remote attackers to cause a denial of service     (daemon crash) by disconnecting during a     server-to-client reply attempt (bsc#1046636)

  - CVE-2017-10806: Stack-based buffer overflow allowed     local guest OS users to cause a denial of service (QEMU     process crash) via vectors related to logging debug     messages (bsc#1047674)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2017-7377: The v9fs_create and v9fs_lcreate     functions in hw/9pfs/9p.c allowed local guest OS     privileged users to cause a denial of service (file     descriptor or memory consumption) via vectors related to     an already in-use fid (bsc#1032075)

  - CVE-2017-8086: A memory leak in the v9fs_list_xattr     function in hw/9pfs/9p-xattr.c allowed local guest OS     privileged users to cause a denial of service (memory     consumption) via vectors involving the orig_value     variable (bsc#1035950)

  - CVE-2017-7471: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper access control issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1034866)

  - CVE-2016-6835: Buffer overflow in the VMWARE VMXNET3 NIC     device support, causing an OOB read access (bsc#994605)

  - CVE-2016-6834: A infinite loop during packet     fragmentation in the VMWARE VMXNET3 NIC device support     allowed privileged user inside guest to crash the Qemu     instance resulting in DoS (bsc#994418)

  - Fix privilege escalation in TCG mode (bsc#1030624)

The update package also includes non-security fixes. See advisory for details.

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

The version of Citrix XenServer installed on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities as noted in the CTX230138 advisory.

The remote NewStart CGSL host, running version MAIN 4.05, has qemu-kvm packages installed that are affected by multiple vulnerabilities:

  - Quick emulator (QEMU) built with the Cirrus CLGD 54xx     VGA Emulator support is vulnerable to an out-of-bounds     access issue. The issue could occur while copying VGA     data in cirrus_bitblt_cputovideo. A privileged user     inside guest could use this flaw to crash the QEMU     process OR potentially execute arbitrary code on host     with privileges of the QEMU process. (CVE-2017-2620)

  - Quick emulator (QEMU) built with the Cirrus CLGD 54xx     VGA emulator support is vulnerable to an out-of-bounds     access issue. It could occur while copying VGA data via     bitblt copy in backward mode. A privileged user inside a     guest could use this flaw to crash the QEMU process     resulting in DoS or potentially execute arbitrary code     on the host with privileges of QEMU process on the host.
    (CVE-2017-2615)

  - An out-of-bounds memory access issue was found in Quick     Emulator (QEMU) in the VNC display driver. This flaw     could occur while refreshing the VNC display surface     area in the 'vnc_refresh_server_surface'. A user inside     a guest could use this flaw to crash the QEMU process.
    (CVE-2017-2633)

  - An integer overflow flaw and an out-of-bounds read flaw     were found in the way QEMU's VGA emulator set certain     VGA registers while in VBE mode. A privileged guest user     could use this flaw to crash the QEMU process instance.
    (CVE-2016-3712)

  - An out-of-bounds read-access flaw was found in the QEMU     emulator built with IP checksum routines. The flaw could     occur when computing a TCP/UDP packet's checksum,     because a QEMU function used the packet's payload length     without checking against the data buffer's size. A user     inside a guest could use this flaw to crash the QEMU     process (denial of service). (CVE-2016-2857)

  - A heap buffer overflow flaw was found in QEMU's Cirrus     CLGD 54xx VGA emulator's VNC display driver support; the     issue could occur when a VNC client attempted to update     its display after a VGA operation is performed by a     guest. A privileged user/process inside a guest could     use this flaw to crash the QEMU process or, potentially,     execute arbitrary code on the host with privileges of     the QEMU process. (CVE-2016-9603)

  - An out-of-bounds access issue was found in QEMU's Cirrus     CLGD 54xx VGA Emulator support. The vulnerability could     occur while copying VGA data using bitblt functions (for     example, cirrus_bitblt_rop_fwd_transp_). A privileged     user inside a guest could use this flaw to crash the     QEMU process, resulting in denial of service.
    (CVE-2017-7718)

  - An out-of-bounds r/w access issue was found in QEMU's     Cirrus CLGD 54xx VGA Emulator support. The vulnerability     could occur while copying VGA data via various bitblt     functions. A privileged user inside a guest could use     this flaw to crash the QEMU process or, potentially,     execute arbitrary code on the host with privileges of     the QEMU process. (CVE-2017-7980)

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

This update for xen fixes several security issues :

  - A malicious 64-bit PV guest may be able to access all of     system memory, allowing for all of privilege escalation,     host crashes, and information leaks by placing a IRET     hypercall in the middle of a multicall batch (XSA-213,     bsc#1034843)

  - A malicious pair of guests may be able to access all of     system memory, allowing for all of privilege escalation,     host crashes, and information leaks because of a missing     check when transfering pages via GNTTABOP_transfer     (XSA-214, bsc#1034844).

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034994).

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028655)

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

This update for xen fixes several issues. These security issues were fixed :

  - A malicious 64-bit PV guest may be able to access all of     system memory, allowing for all of privilege escalation,     host crashes, and information leaks by placing a IRET     hypercall in the middle of a multicall batch (XSA-213,     bsc#1034843)

  - A malicious pair of guests may be able to access all of     system memory, allowing for all of privilege escalation,     host crashes, and information leaks because of a missing     check when transfering pages via GNTTABOP_transfer     (XSA-214, bsc#1034844).

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034994).

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028655)

The update package also includes non-security fixes. See advisory for details.

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
99963	SUSE SLES12 Security Update : xen (SUSE-SU-2017:1148-1)	Nessus	SuSE Local Security Checks	2017/5/3	2025/12/22	high
100092	RHEL 6 : qemu-kvm (RHSA-2017:1206)	Nessus	Red Hat Local Security Checks	2017/5/10	2025/4/15	critical
100115	OracleVM 3.4 : qemu-kvm (OVMSA-2017-0101)	Nessus	OracleVM Local Security Checks	2017/5/11	2025/12/19	critical
100250	Ubuntu 14.04 LTS / 16.04 LTS : QEMU vulnerabilities (USN-3289-1)	Nessus	Ubuntu Local Security Checks	2017/5/17	2025/9/3	high
100630	GLSA-201706-03 : QEMU: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	2017/6/6	2025/12/17	critical
101463	Virtuozzo 6 : qemu-guest-agent / qemu-img / qemu-kvm / etc (VZLSA-2017-1206)	Nessus	Virtuozzo Local Security Checks	2017/7/13	2025/12/11	critical
102008	Fedora 25 : 2:qemu (2017-f941184db1)	Nessus	Fedora Local Security Checks	2017/7/27	2025/12/4	critical
104495	SUSE SLES12 Security Update : qemu (SUSE-SU-2017:2969-1)	Nessus	SuSE Local Security Checks	2017/11/10	2025/11/14	critical
104780	SUSE SLES11 Security Update : kvm (SUSE-SU-2017:3084-1)	Nessus	SuSE Local Security Checks	2017/11/27	2025/11/13	critical
210179	RHEL 7 : qemu-kvm-rhev (RHSA-2017:0982)	Nessus	Red Hat Local Security Checks	2024/11/4	2024/11/4	critical
221254	Linux Distros Unpatched Vulnerability : CVE-2017-7980	Nessus	Misc.	2025/3/4	2025/8/31	high
291561	MiracleLinux 7 : qemu-kvm-1.5.3-126.el7.9 (AXSA:2017-1696:04)	Nessus	Miracle Linux Local Security Checks	2026/1/19	2026/1/19	high
104471	SUSE SLES12 Security Update : qemu (SUSE-SU-2017:2946-1)	Nessus	SuSE Local Security Checks	2017/11/9	2025/11/14	critical
105083	Citrix XenServer Multiple Vulnerabilities (CTX230138)	Nessus	Misc.	2017/12/7	2020/4/30	high
127343	NewStart CGSL MAIN 4.05 : qemu-kvm Multiple Vulnerabilities (NS-SA-2019-0108)	Nessus	NewStart CGSL Local Security Checks	2019/8/12	2021/1/14	critical
99961	SUSE SLES11 Security Update : xen (SUSE-SU-2017:1146-1)	Nessus	SuSE Local Security Checks	2017/5/3	2025/12/22	critical
99962	SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2017:1147-1)	Nessus	SuSE Local Security Checks	2017/5/3	2025/12/22	critical

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