What’s Vulnerable › Vulnerabilities

CVE-2003-1029

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 9.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2004-02-17 · updated 2026-06-16

Description

The L2TP protocol parser in tcpdump 3.8.1 and earlier allows remote attackers to cause a denial of service (infinite loop and memory consumption) via a packet with invalid data to UDP port 1701, which causes l2tp_avp_print to use a bad length value when calling print_octets.

Affected products

• Lbl Tcpdump: 3.4, 3.5, 3.5.2, 3.6.2, 3.6.3, 3.7

References

• http://lwn.net/Alerts/66805/
• http://marc.info/?l=bugtraq&m=107193841728533&w=2
• http://marc.info/?l=bugtraq&m=107213553214985&w=2
• http://marc.info/?l=tcpdump-workers&m=107228187124962&w=2
• http://secunia.com/advisories/10636
• http://secunia.com/advisories/10652
• http://secunia.com/advisories/10668
• http://secunia.com/advisories/10718
• http://www.debian.org/security/2004/dsa-425
• http://www.mandriva.com/security/advisories?name=MDKSA-2004:008
• http://www.securityfocus.com/archive/1/350238/30/21640/threaded
• http://www.securitytracker.com/id?1008748

Get alerted when CVE-2003-1029 or the next vulnerability affects your stack