Security Advisory SA34731 - udev Denial of Service and Privilege Escalation

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Secunia Advisory SA34731

udev Denial of Service and Privilege Escalation

Secunia Advisory

SA34731

Release Date

2009-04-16

Popularity

5,002 views

Comments

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Criticality level

Less critical

Impact

Privilege escalation
DoS

Where

Local system

Authentication level

This information is available to Secunia VIM customers

Report reliability

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Solution Status

Vendor Patch

Systems affected

This information is available to Secunia VIM customers

Approve distribution

This information is available to Secunia VIM customers

Software:

udev 1.x

Secunia CVSS Score

This information is available to Secunia VIM Customers

CVE Reference(s)

CVE-2009-1185 CVSS score available to Secunia VIM customers
CVE-2009-1186 CVSS score available to Secunia VIM customers

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

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Secunia Advisory SA34731

udev Denial of Service and Privilege Escalation

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