Description
The DTLS dissector in Wireshark 1.6.x before 1.6.14 and 1.8.x before 1.8.6 does not validate the fragment offset before invoking the reassembly state machine, which allows remote attackers to cause a denial of service (application crash) via a large offset value that triggers write access to an invalid memory location.
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 | 1.8.2-5 | — |
| Debian 13 | wireshark | 1.8.2-5 | — |
| Debian 12 | wireshark | 1.8.2-5 | — |
| Debian 6.0 | wireshark | 1.2.11-6+squeeze10 | DSA-2644-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | wireshark | 2.2.2-1.1 | openSUSE-SU-2024:10199-1 |
Advisories 2
- DSA-2644-1 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
- http://www.wireshark.org/security/wnpa-sec-2013-22.html
- http://www.wireshark.org/docs/relnotes/wireshark-1.6.14.html
- openSUSE-SU-2013:0494 vendor-advisory
- http://anonsvn.wireshark.org/viewvc?view=revision&revision=48011
- oval:org.mitre.oval:def:16672 vdb-entry signature
- 52471 third-party-advisory
- http://www.wireshark.org/docs/relnotes/wireshark-1.8.6.html
- openSUSE-SU-2013:0506 vendor-advisory
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8380
- DSA-2644 vendor-advisory