CVE-2005-1278: Lbl Tcpdump

Medium severity, CVSS 5.0. EPSS: 10.8% chance of exploitation in the next 30 days.

The isis_print function, as called by isoclns_print, in tcpdump 3.9.1 and earlier allows remote attackers to cause a denial of service (infinite loop) via a zero length, as demonstrated using a GRE packet.

Affected products

• Lbl Tcpdump: up to and including 3.9.1

Published 2005-05-02. Last modified 2026-06-16.