Description
The dissect_clnp function in epan/dissectors/packet-clnp.c in the CLNP dissector in Wireshark 1.6.x before 1.6.13 and 1.8.x before 1.8.5 does not properly manage an offset variable, which allows remote attackers to cause a denial of service (infinite loop or application crash) via a malformed packet.
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 14 | wireshark | 1.8.6-1 | — |
| Debian 13 | wireshark | 1.8.6-1 | — |
| Debian 12 | wireshark | 1.8.6-1 | — |
| Debian 6.0 | wireshark | 1.2.11-6+squeeze9 | DSA-2625-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | wireshark | 2.2.2-1.1 | openSUSE-SU-2024:10199-1 |
Advisories 2
- DSA-2625-1 wireshark - several Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10199-1 wireshark-2.2.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7871
- http://anonsvn.wireshark.org/viewvc?view=revision&revision=45646
- DSA-2625 vendor-advisory
- oval:org.mitre.oval:def:16426 vdb-entry signature
- http://anonsvn.wireshark.org/viewvc/trunk/epan/dissectors/packet-clnp.c?r1=45646&r2=45645&pathrev=45646
- openSUSE-SU-2013:0285 vendor-advisory
- http://www.wireshark.org/security/wnpa-sec-2013-02.html
- openSUSE-SU-2013:0276 vendor-advisory