CVE-2003-1013

The Q.931 dissector in Ethereal before 0.10.0, and Tethereal, allows remote attackers to cause a...

7.5 High

The Q.931 dissector in Ethereal before 0.10.0, and Tethereal, allows remote attackers to cause a denial of service (crash) via a malformed Q.931, which triggers a null dereference.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

2.93%Down 0.8 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

The Q.931 dissector in Ethereal before 0.10.0, and Tethereal, allows remote attackers to cause a denial of service (crash) via a malformed Q.931, which triggers a null dereference.

Record: CVE-2003-1013
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-476
Updated: 2026-11-02

CVE List No score

The Q.931 dissector in Ethereal before 0.10.0, and Tethereal, allows remote attackers to cause a denial of service (crash) via a malformed Q.931, which triggers a null dereference.

Record: CVE-2003-1013
Updated: 2026-11-02

EUVDEUVD-2003-1003 No score

The Q.931 dissector in Ethereal before 0.10.0, and Tethereal, allows remote attackers to cause a denial of service (crash) via a malformed Q.931, which triggers a null dereference.

Record: EUVD-2003-1003
Updated: 2026-11-03

GitHub AdvisoriesGHSA-763w-9m8f-rp93 No score

The Q.931 dissector in Ethereal before 0.10.0, and Tethereal, allows remote attackers to cause a...

The Q.931 dissector in Ethereal before 0.10.0, and Tethereal, allows remote attackers to cause a denial of service (crash) via a malformed Q.931, which triggers a null dereference.

Record: GHSA-763w-9m8f-rp93
Updated: 2026-11-02

Affected products

ethereal

Affected packages

Affected packages
Package	Affected	Fixed
`ethereal` Debian:3.0 From an advisory covering 5 CVEs	before 0.9.4-1woody6	0.9.4-1woody6
`ethereal` Red Hat:enterprise_linux:3::as From an advisory covering 2 CVEs	before 0:0.10.0a-0.30E.1	0:0.10.0a-0.30E.1
`ethereal-gnome` Red Hat:enterprise_linux:3::as From an advisory covering 2 CVEs	before 0:0.10.0a-0.30E.1	0:0.10.0a-0.30E.1
`ethereal` Red Hat:enterprise_linux:3::desktop From an advisory covering 2 CVEs	before 0:0.10.0a-0.30E.1	0:0.10.0a-0.30E.1
`ethereal-gnome` Red Hat:enterprise_linux:3::desktop From an advisory covering 2 CVEs	before 0:0.10.0a-0.30E.1	0:0.10.0a-0.30E.1
`ethereal` Red Hat:enterprise_linux:3::es From an advisory covering 2 CVEs	before 0:0.10.0a-0.30E.1	0:0.10.0a-0.30E.1
`ethereal-gnome` Red Hat:enterprise_linux:3::es From an advisory covering 2 CVEs	before 0:0.10.0a-0.30E.1	0:0.10.0a-0.30E.1
`ethereal` Red Hat:enterprise_linux:3::ws From an advisory covering 2 CVEs	before 0:0.10.0a-0.30E.1	0:0.10.0a-0.30E.1
`ethereal-gnome` Red Hat:enterprise_linux:3::ws From an advisory covering 2 CVEs	before 0:0.10.0a-0.30E.1	0:0.10.0a-0.30E.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2003-1013 is a high vulnerability (CVSS 7.5) in Ethereal, published December 17, 2003. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.93%, the 87th percentile. No source names a fixed version.

References

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