GLSA 200904-18: udev: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	high
Title:	udev: Multiple vulnerabilities
Date:	04/18/2009
Bugs:	#266290
ID:	200904-18

Synopsis

Two errors in udev allow for a local root compromise and a Denial of Service.

Background

udev is the device manager used in the Linux 2.6 kernel series.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-fs/udev	< 124-r2	>= 124-r2	All supported architectures

Description

Sebastian Krahmer of SUSE discovered the following two vulnerabilities:

udev does not verify the origin of NETLINK messages properly (CVE-2009-1185).
A buffer overflow exists in the util_path_encode() function in lib/libudev-util.c (CVE-2009-1186).

Impact

A local attacker could gain root privileges by sending specially crafted NETLINK messages to udev or cause a Denial of Service.

Workaround

There is no known workaround at this time.

Resolution

All udev users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=sys-fs/udev-124-r2"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200904-18.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.