CVE catalog

CVE-2003-0108

tcpdump: CVE-2003-0108

Severity: Medium
Published: Mar 7, 2003, 5:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 11.34% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	tcpdump	sid	`4.99.6-2`	fixed
Debian	tcpdump	forky	`4.99.6-2`	fixed
Debian	tcpdump	trixie	`4.99.5-2`	fixed
Debian	tcpdump	bookworm	`4.99.3-1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	tcpdump	source	sid	`3.7.1-1.2`	not yet assigned	Not reported	Not reported
Debian	tcpdump	source	forky	`3.7.1-1.2`	not yet assigned	Not reported	Not reported
Debian	tcpdump	source	trixie	`3.7.1-1.2`	not yet assigned	Not reported	Not reported
Debian	tcpdump	source	bookworm	`3.7.1-1.2`	not yet assigned	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[tcpdump]Fixed
Details (2)
- 4.99.3-1 · amd64 · bookworm
  Fixed · Fixed: 3.7.1-1.2
  dsa · tcpdump · debian · bookworm; dsa · tcpdump · debian · 12
- 4.99.3-1 · arm64 · bookworm
  Fixed · Fixed: 3.7.1-1.2
  dsa · tcpdump · debian · bookworm; dsa · tcpdump · debian · 12

[Debian 13 (Trixie)]

[tcpdump]Fixed
Details (2)
- 4.99.5-2 · amd64 · trixie
  Fixed · Fixed: 3.7.1-1.2
  dsa · tcpdump · debian · 13
- 4.99.5-2 · arm64 · trixie
  Fixed · Fixed: 3.7.1-1.2
  dsa · tcpdump · debian · 13

Observed: Oct 23, 2026, 5:02:15 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]