Operating System:

[SUSE]

Published:

19 December 2019

Protect yourself against future threats.

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.4722
                SUSE-SU-2019:3338-1 Security update for xen
                             19 December 2019

===========================================================================

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

Product:           xen
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Increased Privileges   -- Existing Account
                   Access Privileged Data -- Existing Account
                   Denial of Service      -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-19583 CVE-2019-19582 CVE-2019-19581
                   CVE-2019-19580 CVE-2019-19579 CVE-2019-19578
                   CVE-2019-19577  

Reference:         ESB-2019.4707
                   ESB-2019.4675.2
                   ESB-2019.4656

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2019/suse-su-20193338-1.html

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SUSE Security Update: Security update for xen

______________________________________________________________________________

Announcement ID:   SUSE-SU-2019:3338-1
Rating:            important
References:        #1027519 #1152497 #1157047 #1157888 #1158003 #1158004
                   #1158005 #1158006 #1158007
Cross-References:  CVE-2019-19577 CVE-2019-19578 CVE-2019-19579 CVE-2019-19580
                   CVE-2019-19581 CVE-2019-19582 CVE-2019-19583
Affected Products:
                   SUSE Linux Enterprise Module for Server Applications 15-SP1
                   SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP1
                   SUSE Linux Enterprise Module for Basesystem 15-SP1
______________________________________________________________________________

An update that solves 7 vulnerabilities and has two fixes is now available.

Description:

This update for xen fixes the following issues:

  o CVE-2019-19581: Fixed a potential out of bounds on 32-bit Arm (bsc#1158003
    XSA-307).
  o CVE-2019-19582: Fixed a potential infinite loop when x86 accesses to
    bitmaps with a compile time known size of 64 (bsc#1158003 XSA-307).
  o CVE-2019-19583: Fixed improper checks which could have allowed HVM/PVH
    guest userspace code to crash the guest,leading to a guest denial of
    service (bsc#1158004 XSA-308).
  o CVE-2019-19578: Fixed an issue where a malicious or buggy PV guest could
    have caused hypervisor crash resulting in denial of service affecting the
    entire host (bsc#1158005 XSA-309).
  o CVE-2019-19580: Fixed a privilege escalation where a malicious PV guest
    administrator could have been able to escalate their privilege to that of
    the host (bsc#1158006 XSA-310).
  o CVE-2019-19577: Fixed an issue where a malicious guest administrator could
    have caused Xen to access data structures while they are being modified
    leading to a crash (bsc#1158007 XSA-311).
  o CVE-2019-19579: Fixed a privilege escaltion where an untrusted domain with
    access to a physical device can DMA into host memory (bsc#1157888 XSA-306).
  o Fixed an issue where PCI passthrough failed on AMD machine xen host (bsc#
    1157047).

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:

  o SUSE Linux Enterprise Module for Server Applications 15-SP1:
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP1-2019-3338=1
  o SUSE Linux Enterprise Module for Open Buildservice Development Tools
    15-SP1:
    zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2019-3338=1
  o SUSE Linux Enterprise Module for Basesystem 15-SP1:
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2019-3338=1

Package List:

  o SUSE Linux Enterprise Module for Server Applications 15-SP1 (x86_64):
       xen-4.12.1_06-3.9.1
       xen-debugsource-4.12.1_06-3.9.1
       xen-devel-4.12.1_06-3.9.1
       xen-tools-4.12.1_06-3.9.1
       xen-tools-debuginfo-4.12.1_06-3.9.1
  o SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP1
    (aarch64 x86_64):
       xen-debugsource-4.12.1_06-3.9.1
       xen-doc-html-4.12.1_06-3.9.1
  o SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP1
    (aarch64):
       xen-4.12.1_06-3.9.1
       xen-devel-4.12.1_06-3.9.1
       xen-libs-4.12.1_06-3.9.1
       xen-libs-debuginfo-4.12.1_06-3.9.1
       xen-tools-4.12.1_06-3.9.1
       xen-tools-debuginfo-4.12.1_06-3.9.1
       xen-tools-domU-4.12.1_06-3.9.1
       xen-tools-domU-debuginfo-4.12.1_06-3.9.1
  o SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP1
    (x86_64):
       xen-libs-32bit-4.12.1_06-3.9.1
       xen-libs-32bit-debuginfo-4.12.1_06-3.9.1
  o SUSE Linux Enterprise Module for Basesystem 15-SP1 (x86_64):
       xen-debugsource-4.12.1_06-3.9.1
       xen-libs-4.12.1_06-3.9.1
       xen-libs-debuginfo-4.12.1_06-3.9.1
       xen-tools-domU-4.12.1_06-3.9.1
       xen-tools-domU-debuginfo-4.12.1_06-3.9.1


References:

  o https://www.suse.com/security/cve/CVE-2019-19577.html
  o https://www.suse.com/security/cve/CVE-2019-19578.html
  o https://www.suse.com/security/cve/CVE-2019-19579.html
  o https://www.suse.com/security/cve/CVE-2019-19580.html
  o https://www.suse.com/security/cve/CVE-2019-19581.html
  o https://www.suse.com/security/cve/CVE-2019-19582.html
  o https://www.suse.com/security/cve/CVE-2019-19583.html
  o https://bugzilla.suse.com/1027519
  o https://bugzilla.suse.com/1152497
  o https://bugzilla.suse.com/1157047
  o https://bugzilla.suse.com/1157888
  o https://bugzilla.suse.com/1158003
  o https://bugzilla.suse.com/1158004
  o https://bugzilla.suse.com/1158005
  o https://bugzilla.suse.com/1158006
  o https://bugzilla.suse.com/1158007

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