SUSE-SU-2019:14001-1: important: Security update for xen

[sle-updates at lists.suse.com]

   SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2019:14001-1
Rating:             important
References:         #1027519 #1031382 #1123157 #1126140 #1126141 
                    #1126192 #1126195 #1126196 #1126198 #1126201 
                    #1127400 #1129623 
Cross-References:   CVE-2019-6778 CVE-2019-9824
Affected Products:
                    SUSE Linux Enterprise Software Development Kit 11-SP4
                    SUSE Linux Enterprise Server 11-SP4
                    SUSE Linux Enterprise Debuginfo 11-SP4
______________________________________________________________________________

   An update that solves two vulnerabilities and has 10 fixes
   is now available.

Description:

   This update for xen fixes the following issues:

   Security issues fixed:

   - Fixed multiple access violations introduced by XENMEM_exchange hypercall
     which could allow a single PV guest to leak arbitrary amounts of memory,
     leading to a denial of service (bsc#1126192).
   - Fixed an issue which could allow a malicious unprivileged guest
     userspace process to escalate its privilege to that of other userspace
     processes in the same guest and potentially thereby to that
     of the guest operating system (bsc#1126201).
   - Fixed an issue which could allow an untrusted PV domain with access to a
     physical device to DMA into its own pagetables leading to privilege
     escalation (bsc#1126195).
   - Fixed an issue which could allow a malicious or buggy x86 PV guest
     kernels can mount a Denial of Service attack affecting the whole system
     (bsc#1126196).
   - CVE-2019-6778: Fixed a heap buffer overflow in tcp_emu() found in slirp
     (bsc#1123157).
   - Fixed an issue which could allow malicious PV guests may cause a host
     crash or gain access to data pertaining to other guests.Additionally,
     vulnerable configurations are likely to be unstable even in the absence
     of an attack (bsc#1126198).
   - Fixed an issue which could allow malicious 64bit PV guests to cause a
     host crash (bsc#1127400).
   - Fixed an issue which could allow malicious or buggy guests with passed
     through PCI devices to  be able to escalate their privileges, crash the
     host, or access data belonging to other guests. Additionally memory
     leaks were also possible (bsc#1126140).
   - Fixed a race condition issue which could allow malicious PV guests to
     escalate their privilege to that
     of the hypervisor (bsc#1126141).
   - CVE-2019-9824: Fixed an information leak in SLiRP networking
     implementation which could allow a user/process to read uninitialised
     stack memory contents (bsc#1129623).

   Other issues fixed:

   - Fixed an issue where VMs crashing when migrating between dom0 hosts
     (bsc#1031382).
   - Upstream bug fixes (bsc#1027519)


Patch Instructions:

   To install this SUSE Security 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-14001=1

   - SUSE Linux Enterprise Server 11-SP4:

      zypper in -t patch slessp4-xen-14001=1

   - SUSE Linux Enterprise Debuginfo 11-SP4:

      zypper in -t patch dbgsp4-xen-14001=1



Package List:

   - SUSE Linux Enterprise Software Development Kit 11-SP4 (i586 x86_64):

      xen-devel-4.4.4_40-61.43.2

   - SUSE Linux Enterprise Server 11-SP4 (i586 x86_64):

      xen-kmp-default-4.4.4_40_3.0.101_108.87-61.43.2
      xen-libs-4.4.4_40-61.43.2
      xen-tools-domU-4.4.4_40-61.43.2

   - SUSE Linux Enterprise Server 11-SP4 (x86_64):

      xen-4.4.4_40-61.43.2
      xen-doc-html-4.4.4_40-61.43.2
      xen-libs-32bit-4.4.4_40-61.43.2
      xen-tools-4.4.4_40-61.43.2

   - SUSE Linux Enterprise Server 11-SP4 (i586):

      xen-kmp-pae-4.4.4_40_3.0.101_108.87-61.43.2

   - SUSE Linux Enterprise Debuginfo 11-SP4 (i586 x86_64):

      xen-debuginfo-4.4.4_40-61.43.2
      xen-debugsource-4.4.4_40-61.43.2


References:

   https://www.suse.com/security/cve/CVE-2019-6778.html
   https://www.suse.com/security/cve/CVE-2019-9824.html
   https://bugzilla.suse.com/1027519
   https://bugzilla.suse.com/1031382
   https://bugzilla.suse.com/1123157
   https://bugzilla.suse.com/1126140
   https://bugzilla.suse.com/1126141
   https://bugzilla.suse.com/1126192
   https://bugzilla.suse.com/1126195
   https://bugzilla.suse.com/1126196
   https://bugzilla.suse.com/1126198
   https://bugzilla.suse.com/1126201
   https://bugzilla.suse.com/1127400
   https://bugzilla.suse.com/1129623