Description
The dissect_isakmp function in epan/dissectors/packet-isakmp.c in the ISAKMP dissector in Wireshark 1.6.x before 1.6.12 and 1.8.x before 1.8.4 uses an incorrect data structure to determine IKEv2 decryption parameters, which allows remote attackers to cause a denial of service (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 7 | wireshark | 1.12.1+g01b65bf-4+deb8u6~deb7u1 | DLA-497-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | wireshark +2 | 1.8.10-4.el6 | RHSA-2013:1569 |
Advisories 2
- RHSA-2013:1569 Red Hat Security Advisory: wireshark security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DLA-497-1 wireshark - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://www.wireshark.org/security/wnpa-sec-2012-35.html
- http://anonsvn.wireshark.org/viewvc/trunk/epan/dissectors/packet-isakmp.c?r1=45510&r2=45509&pathrev=45510
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7855
- openSUSE-SU-2012:1633 vendor-advisory
- http://anonsvn.wireshark.org/viewvc?view=revision&revision=45510
- oval:org.mitre.oval:def:15239 vdb-entry signature
- openSUSE-SU-2013:0151 vendor-advisory