SUSE-SU-2017:2856-1: important: Security update for xen

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2017:2856-1
Rating:             important
References:         #1027519 #1059777 #1061076 #1061080 #1061081 
                    #1061082 #1061084 #1061086 #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
Affected Products:
                    SUSE Linux Enterprise Server 12-LTSS
______________________________________________________________________________

   An update that solves 8 vulnerabilities and has one errata
   is now available.

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 Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Server 12-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-2017-1778=1

   To bring your system up-to-date, use "zypper patch".


Package List:

   - SUSE Linux Enterprise Server 12-LTSS (x86_64):

      xen-4.4.4_24-22.54.1
      xen-debugsource-4.4.4_24-22.54.1
      xen-doc-html-4.4.4_24-22.54.1
      xen-kmp-default-4.4.4_24_k3.12.61_52.92-22.54.1
      xen-kmp-default-debuginfo-4.4.4_24_k3.12.61_52.92-22.54.1
      xen-libs-32bit-4.4.4_24-22.54.1
      xen-libs-4.4.4_24-22.54.1
      xen-libs-debuginfo-32bit-4.4.4_24-22.54.1
      xen-libs-debuginfo-4.4.4_24-22.54.1
      xen-tools-4.4.4_24-22.54.1
      xen-tools-debuginfo-4.4.4_24-22.54.1
      xen-tools-domU-4.4.4_24-22.54.1
      xen-tools-domU-debuginfo-4.4.4_24-22.54.1


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/1027519
   https://bugzilla.suse.com/1059777
   https://bugzilla.suse.com/1061076
   https://bugzilla.suse.com/1061080
   https://bugzilla.suse.com/1061081
   https://bugzilla.suse.com/1061082
   https://bugzilla.suse.com/1061084
   https://bugzilla.suse.com/1061086
   https://bugzilla.suse.com/1061087