SB2012103101 - Input validation error in Xen
Published: October 31, 2012 Updated: July 27, 2020
Security Bulletin ID
SB2012103101
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2012-2625)
The vulnerability allows a remote #AU# to perform service disruption.
The PyGrub boot loader in Xen unstable before changeset 25589:60f09d1ab1fe, 4.2.x, and 4.1.x allows local para-virtualized guest users to cause a denial of service (memory consumption) via a large (1) bzip2 or (2) lzma compressed kernel image.
Remediation
Install update from vendor's website.
References
- http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1817
- http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00024.html
- http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
- http://rhn.redhat.com/errata/RHSA-2012-1130.html
- http://secunia.com/advisories/49184
- http://secunia.com/advisories/51413
- http://www.openwall.com/lists/oss-security/2012/10/26/3
- http://www.securityfocus.com/bid/53650
- http://www.securitytracker.com/id?1027090
- http://xenbits.xensource.com/hg/xen-unstable.hg/rev/60f09d1ab1fe