SUSE Security Update: Security update for xen
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Announcement ID: SUSE-SU-2018:0472-1
Rating: important
References: #1027519 #1035442 #1051729 #1061081 #1068032
#1070158 #1070159 #1070160 #1070163 #1074562
#1076116 #1076180
Cross-References: CVE-2017-15595 CVE-2017-17563 CVE-2017-17564
CVE-2017-17565 CVE-2017-17566 CVE-2017-18030
CVE-2017-5715 CVE-2017-5753 CVE-2017-5754
CVE-2018-5683
Affected Products:
SUSE Linux Enterprise Software Development Kit 12-SP2
SUSE Linux Enterprise Server 12-SP2
SUSE Linux Enterprise Desktop 12-SP2
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An update that solves 10 vulnerabilities and has two fixes
is now available.

Description:

This update for xen fixes several issues.

These security issues were fixed:

– CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks
via side effects of speculative execution, aka “Spectre” and “Meltdown”
attacks (bsc#1074562, bsc#1068032)
– CVE-2017-15595: x86 PV guest OS users were able to cause a DoS
(unbounded recursion, stack consumption, and hypervisor crash) or
possibly gain privileges via crafted page-table stacking (bsc#1061081)
– CVE-2017-17566: Prevent PV guest OS users to cause a denial of service
(host OS crash) or gain host OS privileges in shadow mode by mapping a
certain auxiliary page (bsc#1070158).
– CVE-2017-17563: Prevent guest OS users to cause a denial of service
(host OS crash) or gain host OS privileges by leveraging an incorrect
mask for reference-count overflow checking in shadow mode (bsc#1070159).
– CVE-2017-17564: Prevent guest OS users to cause a denial of service
(host OS crash) or gain host OS privileges by leveraging incorrect error
handling for reference counting in shadow mode (bsc#1070160).
– CVE-2017-17565: Prevent PV guest OS users to cause a denial of service
(host OS crash) if shadow mode and log-dirty mode are in place, because
of an incorrect assertion related to M2P (bsc#1070163).
– CVE-2018-5683: The vga_draw_text function allowed local OS guest
privileged users to cause a denial of service (out-of-bounds read and
QEMU process crash) by leveraging improper memory address validation
(bsc#1076116).
– CVE-2017-18030: The cirrus_invalidate_region function allowed local OS
guest privileged users to cause a denial of service (out-of-bounds array
access and QEMU process crash) via vectors related to negative pitch
(bsc#1076180).

These non-security issues were fixed:

– bsc#1051729: Prevent invalid symlinks after install of SLES 12 SP2
– bsc#1035442: Increased the value of LIBXL_DESTROY_TIMEOUT from 10 to 100
seconds. If many domUs shutdown in parallel the backends couldn’t keep up
– bsc#1027519: Added several upstream patches

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-SP2:

zypper in -t patch SUSE-SLE-SDK-12-SP2-2018-325=1

– SUSE Linux Enterprise Server 12-SP2:

zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-325=1

– SUSE Linux Enterprise Desktop 12-SP2:

zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2018-325=1

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

Package List:

– SUSE Linux Enterprise Software Development Kit 12-SP2 (aarch64 x86_64):

xen-debugsource-4.7.4_06-43.24.1
xen-devel-4.7.4_06-43.24.1

– SUSE Linux Enterprise Server 12-SP2 (x86_64):

xen-4.7.4_06-43.24.1
xen-debugsource-4.7.4_06-43.24.1
xen-doc-html-4.7.4_06-43.24.1
xen-libs-32bit-4.7.4_06-43.24.1
xen-libs-4.7.4_06-43.24.1
xen-libs-debuginfo-32bit-4.7.4_06-43.24.1
xen-libs-debuginfo-4.7.4_06-43.24.1
xen-tools-4.7.4_06-43.24.1
xen-tools-debuginfo-4.7.4_06-43.24.1
xen-tools-domU-4.7.4_06-43.24.1
xen-tools-domU-debuginfo-4.7.4_06-43.24.1

– SUSE Linux Enterprise Desktop 12-SP2 (x86_64):

xen-4.7.4_06-43.24.1
xen-debugsource-4.7.4_06-43.24.1
xen-libs-32bit-4.7.4_06-43.24.1
xen-libs-4.7.4_06-43.24.1
xen-libs-debuginfo-32bit-4.7.4_06-43.24.1
xen-libs-debuginfo-4.7.4_06-43.24.1

References:

https://www.suse.com/security/cve/CVE-2017-15595.html
https://www.suse.com/security/cve/CVE-2017-17563.html
https://www.suse.com/security/cve/CVE-2017-17564.html
https://www.suse.com/security/cve/CVE-2017-17565.html
https://www.suse.com/security/cve/CVE-2017-17566.html
https://www.suse.com/security/cve/CVE-2017-18030.html
https://www.suse.com/security/cve/CVE-2017-5715.html
https://www.suse.com/security/cve/CVE-2017-5753.html
https://www.suse.com/security/cve/CVE-2017-5754.html
https://www.suse.com/security/cve/CVE-2018-5683.html
https://bugzilla.suse.com/1027519
https://bugzilla.suse.com/1035442
https://bugzilla.suse.com/1051729
https://bugzilla.suse.com/1061081
https://bugzilla.suse.com/1068032
https://bugzilla.suse.com/1070158
https://bugzilla.suse.com/1070159
https://bugzilla.suse.com/1070160
https://bugzilla.suse.com/1070163
https://bugzilla.suse.com/1074562
https://bugzilla.suse.com/1076116
https://bugzilla.suse.com/1076180

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