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udev Denial of Service and Privilege Escalation

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Release Date:  2009-04-16    Views:  5,510

Secunia Advisory SA34731

Where:

Local system

Impact:

Privilege escalation, DoS

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

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

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: udev Denial of Service and Privilege Escalation

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