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AUSCERT External Security Bulletin Redistribution
ESB-2019.1713
SUSE-SU-2019:1248-1 Security update for xen
15 May 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: xen
Publisher: SUSE
Operating System: SUSE
Impact/Access: Access Privileged Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11091 CVE-2018-12130 CVE-2018-12127
CVE-2018-12126
Reference: ASB-2019.0138
ESB-2019.1708
ESB-2019.1706
ESB-2019.1705
Original Bulletin:
https://www.suse.com/support/update/announcement/2019/suse-su-20191248-1.html
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SUSE Security Update: Security update for xen
______________________________________________________________________________
Announcement ID: SUSE-SU-2019:1248-1
Rating: important
References: #1027519 #1079730 #1098403 #1111025 #1111331 #1120067
#1120095
Cross-References: CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091
Affected Products:
SUSE Linux Enterprise Module for Server Applications 15
SUSE Linux Enterprise Module for Basesystem 15
______________________________________________________________________________
An update that solves four vulnerabilities and has three fixes is now
available.
Description:
This update for xen fixes the following issues:
Four new speculative execution information leak issues have been identified in
Intel CPUs. (bsc#1111331)
o CVE-2018-12126: Microarchitectural Store Buffer Data Sampling (MSBDS)
o CVE-2018-12127: Microarchitectural Fill Buffer Data Sampling (MFBDS)
o CVE-2018-12130: Microarchitectural Load Port Data Samling (MLPDS)
o CVE-2019-11091: Microarchitectural Data Sampling Uncacheable Memory (MDSUM)
These updates contain the XEN Hypervisor adjustments, that additionaly also use
CPU Microcode updates.
The mitigation can be controlled via the "mds" commandline option, see the
documentation.
For more information on this set of vulnerabilities, check out https://
www.suse.com/support/kb/doc/id=7023736
Other fixes:
o Added code to change LIBXL_HOTPLUG_TIMEOUT at runtime.
The included README has details about the impact of this change (bsc#1120095)
o Fixes in Live migrating PV domUs
An earlier change broke live migration of PV domUs without a device model. The
migration would stall for 10 seconds while the domU was paused, which caused
network connections to drop. Fix this by tracking the need for a device model
within libxl. (bsc#1079730, bsc#1098403, bsc#1111025)
o Libvirt segfault when crash triggered on top of HVM guest (bsc#1120067)
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:
zypper in -t patch SUSE-SLE-Module-Server-Applications-15-2019-1248=1
o SUSE Linux Enterprise Module for Basesystem 15:
zypper in -t patch SUSE-SLE-Module-Basesystem-15-2019-1248=1
Package List:
o SUSE Linux Enterprise Module for Server Applications 15 (x86_64):
xen-4.10.3_04-3.19.1
xen-debugsource-4.10.3_04-3.19.1
xen-devel-4.10.3_04-3.19.1
xen-tools-4.10.3_04-3.19.1
xen-tools-debuginfo-4.10.3_04-3.19.1
o SUSE Linux Enterprise Module for Basesystem 15 (x86_64):
xen-debugsource-4.10.3_04-3.19.1
xen-libs-4.10.3_04-3.19.1
xen-libs-debuginfo-4.10.3_04-3.19.1
xen-tools-domU-4.10.3_04-3.19.1
xen-tools-domU-debuginfo-4.10.3_04-3.19.1
References:
o https://www.suse.com/security/cve/CVE-2018-12126.html
o https://www.suse.com/security/cve/CVE-2018-12127.html
o https://www.suse.com/security/cve/CVE-2018-12130.html
o https://www.suse.com/security/cve/CVE-2019-11091.html
o https://bugzilla.suse.com/1027519
o https://bugzilla.suse.com/1079730
o https://bugzilla.suse.com/1098403
o https://bugzilla.suse.com/1111025
o https://bugzilla.suse.com/1111331
o https://bugzilla.suse.com/1120067
o https://bugzilla.suse.com/1120095
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