openSUSE Security Update: Security update for xen
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Announcement ID: openSUSE-SU-2017:2540-1
Rating: important
References: #1027519 #1055695 #1056278 #1056280 #1056281
#1056282
Cross-References: CVE-2017-14316 CVE-2017-14317 CVE-2017-14318
CVE-2017-14319
Affected Products:
openSUSE Leap 42.2
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An update that solves four vulnerabilities and has two
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#1055695: Fixed restoring updates for HVM guests for ballooned domUs

This update was imported from the SUSE:SLE-12-SP2:Update update project.

Patch Instructions:

To install this openSUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:

– openSUSE Leap 42.2:

zypper in -t patch openSUSE-2017-1080=1

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

Package List:

– openSUSE Leap 42.2 (i586 x86_64):

xen-debugsource-4.7.3_04-11.15.1
xen-devel-4.7.3_04-11.15.1
xen-libs-4.7.3_04-11.15.1
xen-libs-debuginfo-4.7.3_04-11.15.1
xen-tools-domU-4.7.3_04-11.15.1
xen-tools-domU-debuginfo-4.7.3_04-11.15.1

– openSUSE Leap 42.2 (x86_64):

xen-4.7.3_04-11.15.1
xen-doc-html-4.7.3_04-11.15.1
xen-libs-32bit-4.7.3_04-11.15.1
xen-libs-debuginfo-32bit-4.7.3_04-11.15.1
xen-tools-4.7.3_04-11.15.1
xen-tools-debuginfo-4.7.3_04-11.15.1

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

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