Security update for xen

Announcement ID:	SUSE-SU-2017:2466-1
Rating:	important
References:	bsc#1056278 bsc#1056280 bsc#1056281 bsc#1056282
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 Server 12 SP1 SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1 SUSE Linux Enterprise Server for SAP Applications 12 SP1 SUSE OpenStack Cloud 6

An update that solves four vulnerabilities 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).

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 OpenStack Cloud 6
  zypper in -t patch SUSE-OpenStack-Cloud-6-2017-1533=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP1
  zypper in -t patch SUSE-SLE-SAP-12-SP1-2017-1533=1
• SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1
  zypper in -t patch SUSE-SLE-SERVER-12-SP1-2017-1533=1

Package List:

• SUSE OpenStack Cloud 6 (x86_64)
  • xen-kmp-default-debuginfo-4.5.5_16_k3.12.74_60.64.57-22.28.1
  • xen-tools-domU-4.5.5_16-22.28.1
  • xen-libs-debuginfo-4.5.5_16-22.28.1
  • xen-4.5.5_16-22.28.1
  • xen-libs-4.5.5_16-22.28.1
  • xen-tools-4.5.5_16-22.28.1
  • xen-tools-domU-debuginfo-4.5.5_16-22.28.1
  • xen-libs-debuginfo-32bit-4.5.5_16-22.28.1
  • xen-libs-32bit-4.5.5_16-22.28.1
  • xen-kmp-default-4.5.5_16_k3.12.74_60.64.57-22.28.1
  • xen-tools-debuginfo-4.5.5_16-22.28.1
  • xen-doc-html-4.5.5_16-22.28.1
  • xen-debugsource-4.5.5_16-22.28.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP1 (x86_64)
  • xen-kmp-default-debuginfo-4.5.5_16_k3.12.74_60.64.57-22.28.1
  • xen-tools-domU-4.5.5_16-22.28.1
  • xen-libs-debuginfo-4.5.5_16-22.28.1
  • xen-4.5.5_16-22.28.1
  • xen-libs-4.5.5_16-22.28.1
  • xen-tools-4.5.5_16-22.28.1
  • xen-tools-domU-debuginfo-4.5.5_16-22.28.1
  • xen-libs-debuginfo-32bit-4.5.5_16-22.28.1
  • xen-libs-32bit-4.5.5_16-22.28.1
  • xen-kmp-default-4.5.5_16_k3.12.74_60.64.57-22.28.1
  • xen-tools-debuginfo-4.5.5_16-22.28.1
  • xen-doc-html-4.5.5_16-22.28.1
  • xen-debugsource-4.5.5_16-22.28.1
• SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1 (x86_64)
  • xen-kmp-default-debuginfo-4.5.5_16_k3.12.74_60.64.57-22.28.1
  • xen-tools-domU-4.5.5_16-22.28.1
  • xen-libs-debuginfo-4.5.5_16-22.28.1
  • xen-4.5.5_16-22.28.1
  • xen-libs-4.5.5_16-22.28.1
  • xen-tools-4.5.5_16-22.28.1
  • xen-tools-domU-debuginfo-4.5.5_16-22.28.1
  • xen-libs-debuginfo-32bit-4.5.5_16-22.28.1
  • xen-libs-32bit-4.5.5_16-22.28.1
  • xen-kmp-default-4.5.5_16_k3.12.74_60.64.57-22.28.1
  • xen-tools-debuginfo-4.5.5_16-22.28.1
  • xen-doc-html-4.5.5_16-22.28.1
  • xen-debugsource-4.5.5_16-22.28.1

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=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