Input validation error in Xen - CVE-2012-2625
Published: October 31, 2012 / Updated: July 27, 2020
Vulnerability identifier: #VU31955
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2012-2625
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Xen
xen (Alpine package)
SUSE Linux
xen (Alpine package)
SUSE Linux
How to mitigate CVE-2012-2625
Install update from vendor's website.
xen (Alpine package) - update to 4.1.3-r1
External 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