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USN-1309-1: DHCP vulnerability

15 December 2011

DHCP could be made to crash if it received specially crafted network traffic.




It was discovered that the DHCP server incorrectly handled certain
malformed packets when configured to evaluate regular expressions. A remote
attacker could use this issue to cause DHCP to crash, resulting in a denial
of service.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 11.10
Ubuntu 11.04

In general, a standard system update will make all the necessary changes.