Security update for xen

Announcement ID:	SUSE-SU-2017:2751-1
Rating:	important
References:	bsc#1027519 bsc#1055321 bsc#1059777 bsc#1061076 bsc#1061077 bsc#1061080 bsc#1061081 bsc#1061082 bsc#1061084 bsc#1061086 bsc#1061087
Cross-References:	CVE-2017-5526
CVSS scores:	CVE-2017-5526 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2017-5526 ( NVD ): 6.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/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 one vulnerability and has 10 security fixes can now be installed.

Description:

This update for xen fixes several issues:

These security issues were fixed:

• CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host (bsc#1059777)
• bsc#1061084: Missing cleanup in the page type system allowed a malicious or buggy PV guest to cause DoS (XSA-242)
• bsc#1061086: A problem in the shadow pagetable code allowed a malicious or buggy HVM guest to cause DoS or cause hypervisor memory corruption potentially allowing the guest to escalate its privilege (XSA-243)
• bsc#1061087: Problematic handling of the selector fields in the Interrupt Descriptor Table (IDT) allowed a malicious or buggy x86 PV guest to escalate its privileges or cause DoS (XSA-244)
• bsc#1061077 Missing checks in the handling of DMOPs allowed malicious or buggy stub domain kernels or tool stacks otherwise living outside of Domain0 to cause a DoS (XSA-238)
• bsc#1061080: Intercepted I/O write operations with less than a full machine word's worth of data were not properly handled, which allowed a malicious unprivileged x86 HVM guest to obtain sensitive information from the host or other guests (XSA-239)
• bsc#1061081: In certain configurations of linear page tables a stack overflow might have occured that allowed a malicious or buggy PV guest to cause DoS and potentially privilege escalation and information leaks (XSA-240)
• bsc#1061082: Under certain conditions x86 PV guests could have caused the hypervisor to miss a necessary TLB flush for a page. This allowed a malicious x86 PV guest to access all of system memory, allowing for privilege escalation, DoS, and information leaks (XSA-241)
• bsc#1061076: Multiple issues existed with the setup of PCI MSI interrupts that allowed a malicious or buggy guest to cause DoS and potentially privilege escalation and information leaks (XSA-237)
• bsc#1055321: When dealing with the grant map space of add-to-physmap operations, ARM specific code failed to release a lock. This allowed a malicious guest administrator to cause DoS (XSA-235)

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-SP3-2017-1702=1
• SUSE Linux Enterprise Software Development Kit 12 SP3
  zypper in -t patch SUSE-SLE-SDK-12-SP3-2017-1702=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2017-1702=1
• SUSE Linux Enterprise Server 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2017-1702=1
• SUSE Linux Enterprise High Performance Computing 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2017-1702=1

Package List:

• SUSE Linux Enterprise Desktop 12 SP3 (x86_64)
  • xen-libs-32bit-4.9.0_14-3.18.1
  • xen-debugsource-4.9.0_14-3.18.1
  • xen-libs-debuginfo-4.9.0_14-3.18.1
  • xen-libs-debuginfo-32bit-4.9.0_14-3.18.1
  • xen-4.9.0_14-3.18.1
  • xen-libs-4.9.0_14-3.18.1
• SUSE Linux Enterprise Software Development Kit 12 SP3 (aarch64 x86_64)
  • xen-debugsource-4.9.0_14-3.18.1
  • xen-devel-4.9.0_14-3.18.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP3 (x86_64)
  • xen-libs-32bit-4.9.0_14-3.18.1
  • xen-tools-domU-4.9.0_14-3.18.1
  • xen-debugsource-4.9.0_14-3.18.1
  • xen-tools-domU-debuginfo-4.9.0_14-3.18.1
  • xen-doc-html-4.9.0_14-3.18.1
  • xen-libs-debuginfo-4.9.0_14-3.18.1
  • xen-tools-4.9.0_14-3.18.1
  • xen-libs-debuginfo-32bit-4.9.0_14-3.18.1
  • xen-4.9.0_14-3.18.1
  • xen-tools-debuginfo-4.9.0_14-3.18.1
  • xen-libs-4.9.0_14-3.18.1
• SUSE Linux Enterprise Server 12 SP3 (x86_64)
  • xen-libs-32bit-4.9.0_14-3.18.1
  • xen-tools-domU-4.9.0_14-3.18.1
  • xen-debugsource-4.9.0_14-3.18.1
  • xen-tools-domU-debuginfo-4.9.0_14-3.18.1
  • xen-doc-html-4.9.0_14-3.18.1
  • xen-libs-debuginfo-4.9.0_14-3.18.1
  • xen-tools-4.9.0_14-3.18.1
  • xen-libs-debuginfo-32bit-4.9.0_14-3.18.1
  • xen-4.9.0_14-3.18.1
  • xen-tools-debuginfo-4.9.0_14-3.18.1
  • xen-libs-4.9.0_14-3.18.1
• SUSE Linux Enterprise High Performance Computing 12 SP3 (x86_64)
  • xen-libs-32bit-4.9.0_14-3.18.1
  • xen-tools-domU-4.9.0_14-3.18.1
  • xen-debugsource-4.9.0_14-3.18.1
  • xen-tools-domU-debuginfo-4.9.0_14-3.18.1
  • xen-doc-html-4.9.0_14-3.18.1
  • xen-libs-debuginfo-4.9.0_14-3.18.1
  • xen-tools-4.9.0_14-3.18.1
  • xen-libs-debuginfo-32bit-4.9.0_14-3.18.1
  • xen-4.9.0_14-3.18.1
  • xen-tools-debuginfo-4.9.0_14-3.18.1
  • xen-libs-4.9.0_14-3.18.1

References:

• https://www.suse.com/security/cve/CVE-2017-5526.html
• https://bugzilla.suse.com/show_bug.cgi?id=1027519
• https://bugzilla.suse.com/show_bug.cgi?id=1055321
• https://bugzilla.suse.com/show_bug.cgi?id=1059777
• https://bugzilla.suse.com/show_bug.cgi?id=1061076
• https://bugzilla.suse.com/show_bug.cgi?id=1061077
• https://bugzilla.suse.com/show_bug.cgi?id=1061080
• https://bugzilla.suse.com/show_bug.cgi?id=1061081
• https://bugzilla.suse.com/show_bug.cgi?id=1061082
• https://bugzilla.suse.com/show_bug.cgi?id=1061084
• https://bugzilla.suse.com/show_bug.cgi?id=1061086
• https://bugzilla.suse.com/show_bug.cgi?id=1061087