SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2017:1143-1
Rating:             important
References:         #1022703 #1028655 #1029827 #1030144 #1034843 
                    #1034844 #1034994 #1036146 
Cross-References:   CVE-2016-9603 CVE-2017-7718
Affected Products:
                    SUSE Linux Enterprise Software Development Kit 12-SP2
                    SUSE Linux Enterprise Server 12-SP2
                    SUSE Linux Enterprise Desktop 12-SP2
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   An update that solves two vulnerabilities and has 6 fixes
   is now available.

Description:


   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)

   These non-security issues were fixed:

   - bsc#1029827: Additional xenstore patch
   - bsc#1036146: Xen VM dumped core to wrong path
   - bsc#1022703: Prevent Xen HVM guest with OVMF to hang with unattached
     CDRom


Patch Instructions:

   To install this SUSE Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Software Development Kit 12-SP2:

      zypper in -t patch SUSE-SLE-SDK-12-SP2-2017-663=1

   - SUSE Linux Enterprise Server 12-SP2:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2017-663=1

   - SUSE Linux Enterprise Desktop 12-SP2:

      zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2017-663=1

   To bring your system up-to-date, use "zypper patch".


Package List:

   - SUSE Linux Enterprise Software Development Kit 12-SP2 (aarch64 x86_64):

      xen-debugsource-4.7.2_04-39.1
      xen-devel-4.7.2_04-39.1

   - SUSE Linux Enterprise Server 12-SP2 (x86_64):

      xen-4.7.2_04-39.1
      xen-debugsource-4.7.2_04-39.1
      xen-doc-html-4.7.2_04-39.1
      xen-libs-32bit-4.7.2_04-39.1
      xen-libs-4.7.2_04-39.1
      xen-libs-debuginfo-32bit-4.7.2_04-39.1
      xen-libs-debuginfo-4.7.2_04-39.1
      xen-tools-4.7.2_04-39.1
      xen-tools-debuginfo-4.7.2_04-39.1
      xen-tools-domU-4.7.2_04-39.1
      xen-tools-domU-debuginfo-4.7.2_04-39.1

   - SUSE Linux Enterprise Desktop 12-SP2 (x86_64):

      xen-4.7.2_04-39.1
      xen-debugsource-4.7.2_04-39.1
      xen-libs-32bit-4.7.2_04-39.1
      xen-libs-4.7.2_04-39.1
      xen-libs-debuginfo-32bit-4.7.2_04-39.1
      xen-libs-debuginfo-4.7.2_04-39.1


References:

   https://www.suse.com/security/cve/CVE-2016-9603.html
   https://www.suse.com/security/cve/CVE-2017-7718.html
   https://bugzilla.suse.com/1022703
   https://bugzilla.suse.com/1028655
   https://bugzilla.suse.com/1029827
   https://bugzilla.suse.com/1030144
   https://bugzilla.suse.com/1034843
   https://bugzilla.suse.com/1034844
   https://bugzilla.suse.com/1034994
   https://bugzilla.suse.com/1036146

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