ESB-2017.2309 - [UNIX/Linux][SUSE] xen: Multiple vulnerabilities 2017-09-13

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2309
               SUSE Security Update: Security update for xen
                             13 September 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           xen
Publisher:         SUSE
Operating System:  SUSE
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Increased Privileges            -- Existing Account
                   Denial of Service               -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-14319 CVE-2017-14318 CVE-2017-14317
                   CVE-2017-14316  

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2017/suse-su-20172420-1/

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than SUSE. It is recommended that administrators 
         running xen check for an updated version of the software for their 
         operating system.

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   SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2017:2420-1
Rating:             important
References:         #1027519 #1055695 #1056278 #1056280 #1056281 
                    #1056282 #1057358 
Cross-References:   CVE-2017-14316 CVE-2017-14317 CVE-2017-14318
                    CVE-2017-14319
Affected Products:
                    SUSE Linux Enterprise Software Development Kit 12-SP3
                    SUSE Linux Enterprise Server 12-SP3
                    SUSE Linux Enterprise Desktop 12-SP3
______________________________________________________________________________

   An update that solves four vulnerabilities and has three
   fixes is now available.

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).

   These non-security issues were fixed:

   - bsc#1057358: Fixed boot into SUSE Linux Enterprise 12.3 with secure boot
   - bsc#1055695: Fixed restoring updates for HVM guests for ballooned domUs


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 Software Development Kit 12-SP3:

      zypper in -t patch SUSE-SLE-SDK-12-SP3-2017-1500=1

   - SUSE Linux Enterprise Server 12-SP3:

      zypper in -t patch SUSE-SLE-SERVER-12-SP3-2017-1500=1

   - SUSE Linux Enterprise Desktop 12-SP3:

      zypper in -t patch SUSE-SLE-DESKTOP-12-SP3-2017-1500=1

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


Package List:

   - SUSE Linux Enterprise Software Development Kit 12-SP3 (aarch64 x86_64):

      xen-debugsource-4.9.0_12-3.15.1
      xen-devel-4.9.0_12-3.15.1

   - SUSE Linux Enterprise Server 12-SP3 (x86_64):

      xen-4.9.0_12-3.15.1
      xen-debugsource-4.9.0_12-3.15.1
      xen-doc-html-4.9.0_12-3.15.1
      xen-libs-32bit-4.9.0_12-3.15.1
      xen-libs-4.9.0_12-3.15.1
      xen-libs-debuginfo-32bit-4.9.0_12-3.15.1
      xen-libs-debuginfo-4.9.0_12-3.15.1
      xen-tools-4.9.0_12-3.15.1
      xen-tools-debuginfo-4.9.0_12-3.15.1
      xen-tools-domU-4.9.0_12-3.15.1
      xen-tools-domU-debuginfo-4.9.0_12-3.15.1

   - SUSE Linux Enterprise Desktop 12-SP3 (x86_64):

      xen-4.9.0_12-3.15.1
      xen-debugsource-4.9.0_12-3.15.1
      xen-libs-32bit-4.9.0_12-3.15.1
      xen-libs-4.9.0_12-3.15.1
      xen-libs-debuginfo-32bit-4.9.0_12-3.15.1
      xen-libs-debuginfo-4.9.0_12-3.15.1


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/1027519
   https://bugzilla.suse.com/1055695
   https://bugzilla.suse.com/1056278
   https://bugzilla.suse.com/1056280
   https://bugzilla.suse.com/1056281
   https://bugzilla.suse.com/1056282
   https://bugzilla.suse.com/1057358

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