The problem can be corrected by upgrading the affected package to
version 3.8.3-3ubuntu0.3 (for Ubuntu 4.10), or 3.8.3-3ubuntu0.4 (for
Ubuntu 5.04). In general, a standard system upgrade is sufficient to
effect the necessary changes.
It was discovered that certain invalid BGP packets triggered an
infinite loop in tcpdump, which caused tcpdump to stop working. This
could be abused by a remote attacker to bypass tcpdump analysis of