How severe is CVE-2003-1029?

CVE-2003-1029 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2003-1029 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-1029?

CVE-2003-1029 primarily affects Lbl Tcpdump. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2003-1029?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2003-1029 published?

CVE-2003-1029 was published on 2004-02-17 and last updated on 2026-06-16.

CVE-2003-1029

CVE-2003-1029 is a medium-severity vulnerability in Lbl Tcpdump with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Lbl Tcpdump
Published: 2004-02-17
Last modified: 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.

Frequently asked questions

What is CVE-2003-1029?: 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.
How severe is CVE-2003-1029?: CVE-2003-1029 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-1029 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-1029?: CVE-2003-1029 primarily affects Lbl Tcpdump. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-1029?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-1029 published?: CVE-2003-1029 was published on 2004-02-17 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:a:lbl:tcpdump:3.4:*:*:*:*:*:*:*
cpe:2.3:a:lbl:tcpdump:3.5:*:*:*:*:*:*:*
cpe:2.3:a:lbl:tcpdump:3.5.2:*:*:*:*:*:*:*
cpe:2.3:a:lbl:tcpdump:3.6.2:*:*:*:*:*:*:*
cpe:2.3:a:lbl:tcpdump:3.6.3:*:*:*:*:*:*:*
cpe:2.3:a:lbl:tcpdump:3.7:*:*:*:*:*:*:*

More vulnerabilities in Lbl Tcpdump

CVE-2000-1026 — Critical (CVSS 10.0): Multiple buffer overflows in LBNL tcpdump allow remote attackers to execute arbitrary commands.
CVE-2002-1350 — High (CVSS 7.5): The BGP decoding routines in tcpdump 3.6.x before 3.7 do not properly copy data, which allows remote attackers to cause…
CVE-2002-0380 — High (CVSS 7.5): Buffer overflow in tcpdump 3.6.2 and earlier allows remote attackers to cause a denial of service and possibly execute…
CVE-1999-1024 — High (CVSS 7.5): ip_print procedure in Tcpdump 3.4a allows remote attackers to cause a denial of service via a packet with a zero length…
CVE-2001-1279 — High (CVSS 7.5): Buffer overflow in print-rx.c of tcpdump 3.x (probably 3.6x) allows remote attackers to cause a denial of service and…
CVE-2005-1267 — Medium (CVSS 5.0): The bgp_update_print function in tcpdump 3.x does not properly handle a -1 return value from the decode_prefix4…

All CVEs affecting Lbl Tcpdump →