Security update for xen

Announcement ID:	SUSE-SU-2019:1249-1
Rating:	important
References:	bsc#1027519 bsc#1079730 bsc#1098403 bsc#1111025 bsc#1111331 bsc#1120095 bsc#1130680
Cross-References:	CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2018-20815 CVE-2019-11091
CVSS scores:	CVE-2018-12126 ( SUSE ): 3.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N CVE-2018-12126 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2018-12127 ( SUSE ): 3.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N CVE-2018-12127 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2018-12130 ( SUSE ): 6.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2018-12130 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2018-20815 ( SUSE ): 7.0 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H CVE-2018-20815 ( NVD ): 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2019-11091 ( SUSE ): 6.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2019-11091 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Affected Products:	SUSE Linux Enterprise Desktop 12 SP4 SUSE Linux Enterprise High Performance Computing 12 SP4 SUSE Linux Enterprise Server 12 SP4 SUSE Linux Enterprise Server for SAP Applications 12 SP4 SUSE Linux Enterprise Software Development Kit 12 SP4

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

Description:

This update for xen fixes the following issues:

Four new speculative execution information leak issues have been identified in Intel CPUs. (bsc#1111331)

• CVE-2018-12126: Microarchitectural Store Buffer Data Sampling (MSBDS)
• CVE-2018-12127: Microarchitectural Fill Buffer Data Sampling (MFBDS)
• CVE-2018-12130: Microarchitectural Load Port Data Samling (MLPDS)
• CVE-2019-11091: Microarchitectural Data Sampling Uncacheable Memory (MDSUM)

These updates contain the XEN Hypervisor adjustments, that additionaly also use CPU Microcode updates.

The mitigation can be controlled via the "mds" commandline option, see the documentation.

For more information on this set of vulnerabilities, check out https://www.suse.com/support/kb/doc/?id=7023736

Security issue fixed:

• CVE-2018-20815: Fixed a heap buffer overflow while loading device tree blob (bsc#1130680)

Other fixes:

• Added code to change LIBXL_HOTPLUG_TIMEOUT at runtime.

The included README has details about the impact of this change (bsc#1120095)

• Fixes in Live migrating PV domUs

An earlier change broke live migration of PV domUs without a device model. The migration would stall for 10 seconds while the domU was paused, which caused network connections to drop. Fix this by tracking the need for a device model within libxl. (bsc#1079730, bsc#1098403, bsc#1111025)

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 SP4
  zypper in -t patch SUSE-SLE-DESKTOP-12-SP4-2019-1249=1
• SUSE Linux Enterprise Software Development Kit 12 SP4
  zypper in -t patch SUSE-SLE-SDK-12-SP4-2019-1249=1
• SUSE Linux Enterprise High Performance Computing 12 SP4
  zypper in -t patch SUSE-SLE-SERVER-12-SP4-2019-1249=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP4
  zypper in -t patch SUSE-SLE-SERVER-12-SP4-2019-1249=1
• SUSE Linux Enterprise Server 12 SP4
  zypper in -t patch SUSE-SLE-SERVER-12-SP4-2019-1249=1

Package List:

• SUSE Linux Enterprise Desktop 12 SP4 (x86_64)
  • xen-libs-debuginfo-32bit-4.11.1_06-2.11.1
  • xen-4.11.1_06-2.11.1
  • xen-debugsource-4.11.1_06-2.11.1
  • xen-libs-debuginfo-4.11.1_06-2.11.1
  • xen-libs-4.11.1_06-2.11.1
  • xen-libs-32bit-4.11.1_06-2.11.1
• SUSE Linux Enterprise Software Development Kit 12 SP4 (aarch64 x86_64)
  • xen-devel-4.11.1_06-2.11.1
  • xen-debugsource-4.11.1_06-2.11.1
• SUSE Linux Enterprise High Performance Computing 12 SP4 (x86_64)
  • xen-tools-4.11.1_06-2.11.1
  • xen-tools-debuginfo-4.11.1_06-2.11.1
  • xen-libs-debuginfo-32bit-4.11.1_06-2.11.1
  • xen-4.11.1_06-2.11.1
  • xen-debugsource-4.11.1_06-2.11.1
  • xen-tools-domU-debuginfo-4.11.1_06-2.11.1
  • xen-libs-debuginfo-4.11.1_06-2.11.1
  • xen-libs-4.11.1_06-2.11.1
  • xen-doc-html-4.11.1_06-2.11.1
  • xen-tools-domU-4.11.1_06-2.11.1
  • xen-libs-32bit-4.11.1_06-2.11.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP4 (x86_64)
  • xen-tools-4.11.1_06-2.11.1
  • xen-tools-debuginfo-4.11.1_06-2.11.1
  • xen-libs-debuginfo-32bit-4.11.1_06-2.11.1
  • xen-4.11.1_06-2.11.1
  • xen-debugsource-4.11.1_06-2.11.1
  • xen-tools-domU-debuginfo-4.11.1_06-2.11.1
  • xen-libs-debuginfo-4.11.1_06-2.11.1
  • xen-libs-4.11.1_06-2.11.1
  • xen-doc-html-4.11.1_06-2.11.1
  • xen-tools-domU-4.11.1_06-2.11.1
  • xen-libs-32bit-4.11.1_06-2.11.1
• SUSE Linux Enterprise Server 12 SP4 (x86_64)
  • xen-tools-4.11.1_06-2.11.1
  • xen-tools-debuginfo-4.11.1_06-2.11.1
  • xen-libs-debuginfo-32bit-4.11.1_06-2.11.1
  • xen-4.11.1_06-2.11.1
  • xen-debugsource-4.11.1_06-2.11.1
  • xen-tools-domU-debuginfo-4.11.1_06-2.11.1
  • xen-libs-debuginfo-4.11.1_06-2.11.1
  • xen-libs-4.11.1_06-2.11.1
  • xen-doc-html-4.11.1_06-2.11.1
  • xen-tools-domU-4.11.1_06-2.11.1
  • xen-libs-32bit-4.11.1_06-2.11.1

References:

• https://www.suse.com/security/cve/CVE-2018-12126.html
• https://www.suse.com/security/cve/CVE-2018-12127.html
• https://www.suse.com/security/cve/CVE-2018-12130.html
• https://www.suse.com/security/cve/CVE-2018-20815.html
• https://www.suse.com/security/cve/CVE-2019-11091.html
• https://bugzilla.suse.com/show_bug.cgi?id=1027519
• https://bugzilla.suse.com/show_bug.cgi?id=1079730
• https://bugzilla.suse.com/show_bug.cgi?id=1098403
• https://bugzilla.suse.com/show_bug.cgi?id=1111025
• https://bugzilla.suse.com/show_bug.cgi?id=1111331
• https://bugzilla.suse.com/show_bug.cgi?id=1120095
• https://bugzilla.suse.com/show_bug.cgi?id=1130680