CVE-2003-0356

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 9.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2003-06-09 · updated 2026-06-16
Weakness: CWE-193

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.

Affected products

Ethereal: before 0.9.12 — fixed in 0.9.12

How to fix

Upgrade to a fixed version: Ethereal 0.9.12. Check the vendor advisory for mitigations.

References

http://www.debian.org/security/2003/dsa-313
http://www.ethereal.com/appnotes/enpa-sa-00009.html
http://www.kb.cert.org/vuls/id/641013
http://www.mandriva.com/security/advisories?name=MDKSA-2003:067
http://www.redhat.com/support/errata/RHSA-2003-077.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A69
http://www.debian.org/security/2003/dsa-313
http://www.ethereal.com/appnotes/enpa-sa-00009.html
http://www.kb.cert.org/vuls/id/641013
http://www.mandriva.com/security/advisories?name=MDKSA-2003:067
http://www.redhat.com/support/errata/RHSA-2003-077.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A69

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