Security update for xen

Announcement ID:	SUSE-SU-2017:2815-1
Rating:	important
References:	bsc#1027519 bsc#1059777 bsc#1061076 bsc#1061080 bsc#1061081 bsc#1061082 bsc#1061084 bsc#1061086 bsc#1061087
Cross-References:	CVE-2017-15588 CVE-2017-15589 CVE-2017-15590 CVE-2017-15592 CVE-2017-15593 CVE-2017-15594 CVE-2017-15595 CVE-2017-5526
CVSS scores:	CVE-2017-15588 ( SUSE ): 8.1 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVE-2017-15588 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2017-15589 ( SUSE ): 3.2 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N CVE-2017-15589 ( NVD ): 6.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2017-15590 ( SUSE ): 8.1 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVE-2017-15590 ( NVD ): 8.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2017-15592 ( SUSE ): 8.1 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVE-2017-15592 ( NVD ): 8.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2017-15593 ( SUSE ): 5.9 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H CVE-2017-15593 ( NVD ): 6.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2017-15594 ( SUSE ): 8.1 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVE-2017-15594 ( NVD ): 8.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2017-15595 ( SUSE ): 8.1 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVE-2017-15595 ( NVD ): 8.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H 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:	SLES for SAP Applications 11-SP4 SUSE Linux Enterprise Server 11 SP4 SUSE Linux Enterprise Software Development Kit 11 SP4

An update that solves eight vulnerabilities and has one security fix 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)
• CVE-2017-15593: Missing cleanup in the page type system allowed a malicious or buggy PV guest to cause DoS (XSA-242 bsc#1061084)
• CVE-2017-15592: 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#1061086)
• CVE-2017-15594: 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#1061087)
• CVE-2017-15589: 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#1061080)
• CVE-2017-15595: 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#1061081)
• CVE-2017-15588: 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#1061082)
• CVE-2017-15590: 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#1061076)

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 Software Development Kit 11 SP4
  zypper in -t patch sdksp4-xen-13321=1
• SUSE Linux Enterprise Server 11 SP4
  zypper in -t patch slessp4-xen-13321=1
• SLES for SAP Applications 11-SP4
  zypper in -t patch slessp4-xen-13321=1

Package List:

• SUSE Linux Enterprise Software Development Kit 11 SP4 (x86_64 i586)
  • xen-devel-4.4.4_24-61.12.1
• SUSE Linux Enterprise Server 11 SP4 (x86_64 i586)
  • xen-libs-4.4.4_24-61.12.1
  • xen-kmp-default-4.4.4_24_3.0.101_108.10-61.12.1
  • xen-tools-domU-4.4.4_24-61.12.1
• SUSE Linux Enterprise Server 11 SP4 (i586)
  • xen-kmp-pae-4.4.4_24_3.0.101_108.10-61.12.1
• SUSE Linux Enterprise Server 11 SP4 (x86_64)
  • xen-libs-32bit-4.4.4_24-61.12.1
  • xen-4.4.4_24-61.12.1
  • xen-tools-4.4.4_24-61.12.1
  • xen-doc-html-4.4.4_24-61.12.1
• SLES for SAP Applications 11-SP4 (x86_64)
  • xen-4.4.4_24-61.12.1
  • xen-doc-html-4.4.4_24-61.12.1
  • xen-libs-4.4.4_24-61.12.1
  • xen-kmp-default-4.4.4_24_3.0.101_108.10-61.12.1
  • xen-tools-4.4.4_24-61.12.1
  • xen-tools-domU-4.4.4_24-61.12.1
  • xen-libs-32bit-4.4.4_24-61.12.1

References:

• https://www.suse.com/security/cve/CVE-2017-15588.html
• https://www.suse.com/security/cve/CVE-2017-15589.html
• https://www.suse.com/security/cve/CVE-2017-15590.html
• https://www.suse.com/security/cve/CVE-2017-15592.html
• https://www.suse.com/security/cve/CVE-2017-15593.html
• https://www.suse.com/security/cve/CVE-2017-15594.html
• https://www.suse.com/security/cve/CVE-2017-15595.html
• 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=1059777
• https://bugzilla.suse.com/show_bug.cgi?id=1061076
• 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