Security update for xen

Announcement ID:	SUSE-SU-2017:1143-1
Rating:	important
References:	bsc#1022703 bsc#1028655 bsc#1029827 bsc#1030144 bsc#1034843 bsc#1034844 bsc#1034994 bsc#1036146
Cross-References:	CVE-2016-9603 CVE-2017-7718
CVSS scores:	CVE-2016-9603 ( NVD ): 9.9 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2017-7718 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2017-7718 ( NVD ): 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products:	SUSE Linux Enterprise Desktop 12 SP2 SUSE Linux Enterprise High Performance Computing 12 SP2 SUSE Linux Enterprise Server 12 SP2 SUSE Linux Enterprise Server for SAP Applications 12 SP2 SUSE Linux Enterprise Software Development Kit 12 12-SP2

An update that solves two vulnerabilities and has six security fixes can now be installed.

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 update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

• SUSE Linux Enterprise Desktop 12 SP2
  zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2017-663=1
• SUSE Linux Enterprise Software Development Kit 12 12-SP2
  zypper in -t patch SUSE-SLE-SDK-12-SP2-2017-663=1
• SUSE Linux Enterprise High Performance Computing 12 SP2
  zypper in -t patch SUSE-SLE-SERVER-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 Server for SAP Applications 12 SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-2017-663=1

Package List:

• SUSE Linux Enterprise Desktop 12 SP2 (x86_64)
  • xen-4.7.2_04-39.1
  • xen-libs-debuginfo-4.7.2_04-39.1
  • xen-debugsource-4.7.2_04-39.1
  • xen-libs-debuginfo-32bit-4.7.2_04-39.1
  • xen-libs-32bit-4.7.2_04-39.1
  • xen-libs-4.7.2_04-39.1
• SUSE Linux Enterprise Software Development Kit 12 12-SP2 (aarch64 x86_64)
  • xen-devel-4.7.2_04-39.1
  • xen-debugsource-4.7.2_04-39.1
• SUSE Linux Enterprise High Performance Computing 12 SP2 (x86_64)
  • xen-tools-debuginfo-4.7.2_04-39.1
  • xen-4.7.2_04-39.1
  • xen-doc-html-4.7.2_04-39.1
  • xen-libs-debuginfo-4.7.2_04-39.1
  • xen-tools-domU-debuginfo-4.7.2_04-39.1
  • xen-debugsource-4.7.2_04-39.1
  • xen-libs-debuginfo-32bit-4.7.2_04-39.1
  • xen-libs-32bit-4.7.2_04-39.1
  • xen-tools-domU-4.7.2_04-39.1
  • xen-tools-4.7.2_04-39.1
  • xen-libs-4.7.2_04-39.1
• SUSE Linux Enterprise Server 12 SP2 (x86_64)
  • xen-tools-debuginfo-4.7.2_04-39.1
  • xen-4.7.2_04-39.1
  • xen-doc-html-4.7.2_04-39.1
  • xen-libs-debuginfo-4.7.2_04-39.1
  • xen-tools-domU-debuginfo-4.7.2_04-39.1
  • xen-debugsource-4.7.2_04-39.1
  • xen-libs-debuginfo-32bit-4.7.2_04-39.1
  • xen-libs-32bit-4.7.2_04-39.1
  • xen-tools-domU-4.7.2_04-39.1
  • xen-tools-4.7.2_04-39.1
  • xen-libs-4.7.2_04-39.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (x86_64)
  • xen-tools-debuginfo-4.7.2_04-39.1
  • xen-4.7.2_04-39.1
  • xen-doc-html-4.7.2_04-39.1
  • xen-libs-debuginfo-4.7.2_04-39.1
  • xen-tools-domU-debuginfo-4.7.2_04-39.1
  • xen-debugsource-4.7.2_04-39.1
  • xen-libs-debuginfo-32bit-4.7.2_04-39.1
  • xen-libs-32bit-4.7.2_04-39.1
  • xen-tools-domU-4.7.2_04-39.1
  • xen-tools-4.7.2_04-39.1
  • xen-libs-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/show_bug.cgi?id=1022703
• https://bugzilla.suse.com/show_bug.cgi?id=1028655
• https://bugzilla.suse.com/show_bug.cgi?id=1029827
• https://bugzilla.suse.com/show_bug.cgi?id=1030144
• https://bugzilla.suse.com/show_bug.cgi?id=1034843
• https://bugzilla.suse.com/show_bug.cgi?id=1034844
• https://bugzilla.suse.com/show_bug.cgi?id=1034994
• https://bugzilla.suse.com/show_bug.cgi?id=1036146