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openSUSE 42.2: 2017:2540-1 Important: Xen Issues and Fixes

opensuse
Calendar Grey September 21, 2017
Dist Opensuse Esm H88
Essential patches released for openSUSE xen, targeting various vulnerabilities and security concerns for improved system protection.
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...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory security issue exploit important update xen openSUSE system safety

Patch

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

--

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2017:2540-1
Rating: important
Affected Products: openSUSE Leap 42.2 le.

Topics%20covered

Topics Covered

security advisory security issue exploit important update xen openSUSE system safety

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