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TITLE:
udev Denial of Service and Privilege Escalation

SECUNIA ADVISORY ID:
SA34731

VERIFY ADVISORY:
http://secunia.com/advisories/34731/

DESCRIPTION:
Some vulnerabilities have been reported in udev, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service) or gain escalated privileges.

1) A vulnerability is caused due to udev not properly verifying the
credentials of received NETLINK messages. This can be exploited to
gain escalated privileges by sending multicast NETLINK messages.

2) A vulnerability is caused due to a boundary error within the
"util_path_encode()" function in udev/lib/libudev-util.c. This can be
exploited to cause a crash by providing specially crafted input.

The vulnerabilities are reported in versions prior to 1.4.1.

SOLUTION:
Update to version 1.4.1.

PROVIDED AND/OR DISCOVERED BY:
Sebastian Krahmer

ORIGINAL ADVISORY:
USN-758-1:
https://lists.ubuntu.com/archives/ubuntu-security-announce/2009-April/000884.html

Red Hat Bugzilla:
https://bugzilla.redhat.com/show_bug.cgi?id=495051
https://bugzilla.redhat.com/show_bug.cgi?id=495052

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