Security update for xen

Announcement ID:	SUSE-SU-2017:2420-1
Rating:	important
References:	bsc#1027519 bsc#1055695 bsc#1056278 bsc#1056280 bsc#1056281 bsc#1056282 bsc#1057358
Cross-References:	CVE-2017-14316 CVE-2017-14317 CVE-2017-14318 CVE-2017-14319
CVSS scores:	CVE-2017-14316 ( SUSE ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2017-14316 ( NVD ): 8.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2017-14317 ( SUSE ): 4.4 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVE-2017-14317 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2017-14318 ( SUSE ): 7.8 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2017-14318 ( NVD ): 6.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2017-14319 ( SUSE ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2017-14319 ( NVD ): 8.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Products:	SUSE Linux Enterprise Desktop 12 SP3 SUSE Linux Enterprise High Performance Computing 12 SP3 SUSE Linux Enterprise Server 12 SP3 SUSE Linux Enterprise Server for SAP Applications 12 SP3 SUSE Linux Enterprise Software Development Kit 12 SP3

An update that solves four vulnerabilities and has three security fixes can now be installed.

Description:

This update for xen fixes several issues.

These security issues were fixed:

• CVE-2017-14316: Missing bound check in function alloc_heap_pages for an internal array allowed attackers using crafted hypercalls to execute arbitrary code within Xen (XSA-231, bsc#1056278)
• CVE-2017-14318: The function __gnttab_cache_flush missed a check for grant tables, allowing a malicious guest to crash the host or for x86 PV guests to potentially escalate privileges (XSA-232, bsc#1056280)
• CVE-2017-14317: A race in cxenstored may have cause a double-free allowind for DoS of the xenstored daemon (XSA-233, bsc#1056281).
• CVE-2017-14319: An error while handling grant mappings allowed malicious or buggy x86 PV guest to escalate its privileges or crash the hypervisor (XSA-234, bsc#1056282).

These non-security issues were fixed:

• bsc#1057358: Fixed boot into SUSE Linux Enterprise 12.3 with secure boot
• bsc#1055695: Fixed restoring updates for HVM guests for ballooned domUs

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 SP3
  zypper in -t patch SUSE-SLE-DESKTOP-12-SP3-2017-1500=1
• SUSE Linux Enterprise Software Development Kit 12 SP3
  zypper in -t patch SUSE-SLE-SDK-12-SP3-2017-1500=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2017-1500=1
• SUSE Linux Enterprise Server 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2017-1500=1
• SUSE Linux Enterprise High Performance Computing 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2017-1500=1

Package List:

• SUSE Linux Enterprise Desktop 12 SP3 (x86_64)
  • xen-libs-debuginfo-32bit-4.9.0_12-3.15.1
  • xen-libs-32bit-4.9.0_12-3.15.1
  • xen-libs-4.9.0_12-3.15.1
  • xen-debugsource-4.9.0_12-3.15.1
  • xen-4.9.0_12-3.15.1
  • xen-libs-debuginfo-4.9.0_12-3.15.1
• SUSE Linux Enterprise Software Development Kit 12 SP3 (aarch64 x86_64)
  • xen-debugsource-4.9.0_12-3.15.1
  • xen-devel-4.9.0_12-3.15.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP3 (x86_64)
  • xen-libs-debuginfo-32bit-4.9.0_12-3.15.1
  • xen-libs-32bit-4.9.0_12-3.15.1
  • xen-tools-4.9.0_12-3.15.1
  • xen-libs-4.9.0_12-3.15.1
  • xen-debugsource-4.9.0_12-3.15.1
  • xen-4.9.0_12-3.15.1
  • xen-libs-debuginfo-4.9.0_12-3.15.1
  • xen-tools-domU-4.9.0_12-3.15.1
  • xen-doc-html-4.9.0_12-3.15.1
  • xen-tools-debuginfo-4.9.0_12-3.15.1
  • xen-tools-domU-debuginfo-4.9.0_12-3.15.1
• SUSE Linux Enterprise Server 12 SP3 (x86_64)
  • xen-libs-debuginfo-32bit-4.9.0_12-3.15.1
  • xen-libs-32bit-4.9.0_12-3.15.1
  • xen-tools-4.9.0_12-3.15.1
  • xen-libs-4.9.0_12-3.15.1
  • xen-debugsource-4.9.0_12-3.15.1
  • xen-4.9.0_12-3.15.1
  • xen-libs-debuginfo-4.9.0_12-3.15.1
  • xen-tools-domU-4.9.0_12-3.15.1
  • xen-doc-html-4.9.0_12-3.15.1
  • xen-tools-debuginfo-4.9.0_12-3.15.1
  • xen-tools-domU-debuginfo-4.9.0_12-3.15.1
• SUSE Linux Enterprise High Performance Computing 12 SP3 (x86_64)
  • xen-libs-debuginfo-32bit-4.9.0_12-3.15.1
  • xen-libs-32bit-4.9.0_12-3.15.1
  • xen-tools-4.9.0_12-3.15.1
  • xen-libs-4.9.0_12-3.15.1
  • xen-debugsource-4.9.0_12-3.15.1
  • xen-4.9.0_12-3.15.1
  • xen-libs-debuginfo-4.9.0_12-3.15.1
  • xen-tools-domU-4.9.0_12-3.15.1
  • xen-doc-html-4.9.0_12-3.15.1
  • xen-tools-debuginfo-4.9.0_12-3.15.1
  • xen-tools-domU-debuginfo-4.9.0_12-3.15.1

References:

• https://www.suse.com/security/cve/CVE-2017-14316.html
• https://www.suse.com/security/cve/CVE-2017-14317.html
• https://www.suse.com/security/cve/CVE-2017-14318.html
• https://www.suse.com/security/cve/CVE-2017-14319.html
• https://bugzilla.suse.com/show_bug.cgi?id=1027519
• https://bugzilla.suse.com/show_bug.cgi?id=1055695
• https://bugzilla.suse.com/show_bug.cgi?id=1056278
• https://bugzilla.suse.com/show_bug.cgi?id=1056280
• https://bugzilla.suse.com/show_bug.cgi?id=1056281
• https://bugzilla.suse.com/show_bug.cgi?id=1056282
• https://bugzilla.suse.com/show_bug.cgi?id=1057358