SB2012103102 - Input validation error in Xen

Description

This security bulletin contains information about 1 security vulnerability.

1) Input validation error (CVE-ID: CVE-2012-4544)

The vulnerability allows a local non-authenticated attacker to perform service disruption.

The PV domain builder in Xen 4.2 and earlier does not validate the size of the kernel or ramdisk (1) before or (2) after decompression, which allows local guest administrators to cause a denial of service (domain 0 memory consumption) via a crafted (a) kernel or (b) ramdisk.

Remediation

Install update from vendor's website.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2012-November/091832.html
• http://lists.fedoraproject.org/pipermail/package-announce/2012-November/091844.html
• http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092050.html
• http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00008.html
• http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00009.html
• http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
• http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
• 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://osvdb.org/86619
• http://rhn.redhat.com/errata/RHSA-2013-0241.html
• http://secunia.com/advisories/51071
• http://secunia.com/advisories/51324
• http://secunia.com/advisories/51352
• http://secunia.com/advisories/51413
• http://www.debian.org/security/2013/dsa-2636
• http://www.openwall.com/lists/oss-security/2012/10/26/3
• http://www.securityfocus.com/bid/56289
• http://www.securitytracker.com/id?1027699
• https://exchange.xforce.ibmcloud.com/vulnerabilities/79617