Description
epan/dissectors/packet-ansi_a.c in the ANSI A dissector in Wireshark 1.4.x before 1.4.12 and 1.6.x before 1.6.6 allows remote attackers to cause a denial of service (NULL pointer dereference and 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 | 1.6.6-1 | — |
| Debian 13 | wireshark | 1.6.6-1 | — |
| Debian 12 | wireshark | 1.6.6-1 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Wireshark - 'call_dissector()' Null Pointer Dereference Denial of Service EDB-18758 · dos · Apr 19, 2012 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 18758 exploit
- 48986 third-party-advisory
- http://www.wireshark.org/security/wnpa-sec-2012-04.html
- [oss-security] 20120328 Re: CVE Request: Multiple wireshark security flaws resolved in 1.4.12 and 1.6.6 mailing-list
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6823
- openSUSE-SU-2012:0558 vendor-advisory
- FEDORA-2012-5243 vendor-advisory
- 48548 third-party-advisory
- FEDORA-2012-5256 vendor-advisory
- oval:org.mitre.oval:def:14991 vdb-entry signature
- 1026874 vdb-entry
- http://anonsvn.wireshark.org/viewvc?view=revision&revision=40962
- wireshark-ansia-dos(74361) vdb-entry