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

sle-security-updates at sle-security-updates at
Thu Oct 26 10:09:10 MDT 2017

   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.


   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
   - 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

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):



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