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Fencer Vulns
high 7.5

CVE-2003-1013 json

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…

published 2003-12-17 22 y ago modified 2026-06-16 4 mo ago also EUVD-2003-1003

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

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.

Patch / fix

  • ethereal ethereal 0.10.0
  • ethereal RHEL 3 0.10.0a-0.30E.1
  • ethereal-gnome RHEL 3 0.10.0a-0.30E.1

red hat advisories RHSA-2004:002

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2003-1013 updated

security flaw

  • Red Hat Desktop version 3 ethereal 0.10.0a-0.30E.1, ethereal-gnome 0.10.0a-0.30E.1 Red Hat Enterprise Linux AS version 3 ethereal 0.10.0a-0.30E.1, ethereal-gnome 0.10.0a-0.30E.1 Red Hat Enterprise Linux ES version 3 ethereal 0.10.0a-0.30E.1, ethereal-gnome 0.10.0a-0.30E.1 Red Hat Enterprise Linux WS version 3 ethereal 0.10.0a-0.30E.1, ethereal-gnome 0.10.0a-0.30E.1
    fixed: vendor fix RHSA-2004:002
  • Red Hat Linux 9
    fixed: vendor fix RHSA-2004:001

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.93% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.