CVE-2013-4494: Input Validation
First published: Sat Nov 02 2013(Updated: )
Xen before 4.1.x, 4.2.x, and 4.3.x does not take the page_alloc_lock and grant_table.lock in the same order, which allows local guest administrators with access to multiple vcpus to cause a denial of service (host deadlock) via unspecified vectors.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | >=4.1.0<=4.1.6.1 | |
| Xen xen-unstable | >=4.2.0<=4.2.5 | |
| Xen xen-unstable | >=4.3.0<=4.3.4 | |
| Debian GNU/Linux | =7.0 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00059.html
- http://rhn.redhat.com/errata/RHSA-2014-0108.html
- http://security.gentoo.org/glsa/glsa-201407-03.xml
- http://www.debian.org/security/2014/dsa-3006
- http://www.openwall.com/lists/oss-security/2013/11/01/2
- http://www.openwall.com/lists/oss-security/2013/11/01/3
Frequently Asked Questions
What are the risks associated with CVE-2013-4494?
CVE-2013-4494 allows local guest administrators to create a denial of service situation resulting in host deadlock.
What versions of Xen are affected by CVE-2013-4494?
CVE-2013-4494 affects Xen versions prior to 4.1.x, 4.2.x, and 4.3.x.
How can I mitigate the issues caused by CVE-2013-4494?
To mitigate CVE-2013-4494, you should upgrade your Xen installation to a version beyond 4.3.4.
Who is at risk due to CVE-2013-4494?
Local guest administrators with access to multiple virtual CPUs are at risk due to CVE-2013-4494.
What type of vulnerability is CVE-2013-4494 classified as?
CVE-2013-4494 is classified as a denial of service vulnerability.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/severity
- agent/author
- agent/references
- agent/last-modified-date
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/4.1.0
- version/xen xen-unstable/4.1.6.1
- version/xen xen-unstable/4.2.0
- version/xen xen-unstable/4.2.5
- version/xen xen-unstable/4.3.0
- version/xen xen-unstable/4.3.4
- vendor/debian
- canonical/debian gnu/linux
- version/debian gnu/linux/7.0