CVE-2003-0356

Name: CVE-2003-0356
Creator: NVD / NIST
Published: 2003-06-09T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 9.57%

Last modified Jun 16, 2026

CVE-2003-0356 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Multiple off-by-one vulnerabilities in Ethereal 0.9.11 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via the (1) AIM, (2) GIOP Gryphon, (3) OSPF, (4) PPTP, (5) Quake, (6) Quake2, (7) Quake3, (8) Rsync, (9) SMB, (10) SMPP, and (11) TSP dissectors, which do not properly use the tvb_get_nstringz and tvb_get_nstringz0 functions.. EPSS estimates a 9.57% chance of exploitation in the next 30 days.

Description

Multiple off-by-one vulnerabilities in Ethereal 0.9.11 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via the (1) AIM, (2) GIOP Gryphon, (3) OSPF, (4) PPTP, (5) Quake, (6) Quake2, (7) Quake3, (8) Rsync, (9) SMB, (10) SMPP, and (11) TSP dissectors, which do not properly use the tvb_get_nstringz and tvb_get_nstringz0 functions.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

9.57%

94.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-193

Affected Software

Vendor	Product	Versions
Ethereal	Ethereal	< 0.9.12

References

http://www.debian.org/security/2003/dsa-313Broken Link, Patch, Vendor Advisory
http://www.ethereal.com/appnotes/enpa-sa-00009.htmlBroken Link, Patch, Vendor Advisory
http://www.kb.cert.org/vuls/id/641013Third Party Advisory, US Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2003:067Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2003-077.htmlBroken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A69Broken Link
http://www.debian.org/security/2003/dsa-313Broken Link, Patch, Vendor Advisory
http://www.ethereal.com/appnotes/enpa-sa-00009.htmlBroken Link, Patch, Vendor Advisory
http://www.kb.cert.org/vuls/id/641013Third Party Advisory, US Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2003:067Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2003-077.htmlBroken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A69Broken Link

Timeline

Published: Jun 9, 2003
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2003-0356?

How severe is CVE-2003-0356?

CVE-2003-0356 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 9.57% probability of exploitation in the next 30 days.

How do I fix CVE-2003-0356?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2003-0356?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST