Description
The SNMP dissector in Ethereal 0.8.15 through 0.10.4 allows remote attackers to cause a denial of service (process crash) via a (1) malformed or (2) missing community string, which causes an out-of-bounds read.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 3.0 | ethereal | 0.9.4-1woody8 | DSA-528 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | ethereal +1 | 0.10.5-0.30E.2 | RHSA-2004:378 |
Advisories 2
- RHSA-2004:378 Red Hat Security Advisory: ethereal security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-528 ethereal - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
References
- 1010655 vdb-entry
- CLA-2005:916 vendor-advisory
- MDKSA-2004:067 vendor-advisory
- http://www.ethereal.com/appnotes/enpa-sa-00015.html
- 12024 third-party-advisory
- oval:org.mitre.oval:def:9721 vdb-entry signature
- http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=127381
- FEDORA-2004-219 vendor-advisory
- ethereal-snmp-community-dos(16632) vdb-entry
- FEDORA-2004-220 vendor-advisory
- DSA-528 vendor-advisory
- VU#835846 third-party-advisory
- RHSA-2004:378 vendor-advisory
- GLSA-200407-08 vendor-advisory