Buffer overflow in Xen - CVE-2013-0231

Vulnerability identifier: #VU32957

CSH Severity: Medium

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2013-0231

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The pciback_enable_msi function in the PCI backend driver (drivers/xen/pciback/conf_space_capability_msi.c) in Xen for the Linux kernel 2.6.18 and 3.8 allows guest OS users with PCI device access to cause a denial of service via a large number of kernel log messages

Xen
SUSE Linux
Ubuntu
linux-grsec (Alpine package)
linux (Ubuntu package)
linux-lts-quantal (Ubuntu package)

Install update from vendor's website.

linux (Ubuntu package) - addressed in versions 3.2.0-39.62, 3.5.0-26.42
linux-lts-quantal (Ubuntu package) - update to 3.5.0-26.42~precise1

• http://lists.opensuse.org/opensuse-security-announce/2013-03/msg00004.html
• http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00018.html
• http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
• http://osvdb.org/89903
• http://secunia.com/advisories/52059
• http://www.debian.org/security/2013/dsa-2632
• http://www.openwall.com/lists/oss-security/2013/02/05/9
• http://www.securityfocus.com/bid/57740
• https://exchange.xforce.ibmcloud.com/vulnerabilities/81923

• Denial of service in Xen
• Buffer overflow in linux-grsec (Alpine package)
• SUSE Linux update for Linux kernel
• Ubuntu update for linux
• Ubuntu update for linux-lts-quantal
• Ubuntu update for linux