CVE-2003-0108: Lbl Tcpdump

Medium severity, CVSS 5.0. EPSS: 11.3% chance of exploitation in the next 30 days.

isakmp_sub_print in tcpdump 3.6 through 3.7.1 allows remote attackers to cause a denial of service (CPU consumption) via a certain malformed ISAKMP packet to UDP port 500, which causes tcpdump to enter an infinite loop.

Affected products

• Lbl Tcpdump: version 3.5.2 only; version 3.6.2 only; version 3.7 only; version 3.7.1 only

Published 2003-03-07. Last modified 2026-06-16.