CVE-2003-1029

Exp

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.

Published: 2004-02-17 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-1029 is rated High Exploit Risk (73.3/100): CVSS Medium severity, with high exploitation likelihood (EPSS 21.39%, 95th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +5.20% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2003-1029

EDB-ID Source Kind Published Link
23452 exploit_db edb 2003-12-20 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2003-1029

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 16.18% 21.39% +5.20%
2 2025-03-29 21.39% 16.18% -5.20%
3 2025-03-17 — 21.39% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-1029

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2003-1029

OS Trackers for CVE-2003-1029

vendor priority summary link
debian not yet assigned CVE-2003-1029 not yet assigned priority: Debian including 1 source packages (tcpdump), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2003-1029

Affected software / configurations for CVE-2003-1029

Vendor Product Version Raw CPE
lbl tcpdump 3.4 cpe:2.3:a:lbl:tcpdump:3.4:*:*:*:*:*:*:*
lbl tcpdump 3.5 cpe:2.3:a:lbl:tcpdump:3.5:*:*:*:*:*:*:*
lbl tcpdump 3.5.2 cpe:2.3:a:lbl:tcpdump:3.5.2:*:*:*:*:*:*:*
lbl tcpdump 3.6.2 cpe:2.3:a:lbl:tcpdump:3.6.2:*:*:*:*:*:*:*
lbl tcpdump 3.6.3 cpe:2.3:a:lbl:tcpdump:3.6.3:*:*:*:*:*:*:*
lbl tcpdump 3.7 cpe:2.3:a:lbl:tcpdump:3.7:*:*:*:*:*:*:*

References for CVE-2003-1029

cvelogic Threat Intelligence