Description
The csnStreamDissector function in epan/dissectors/packet-csn1.c in the CSN.1 dissector in Wireshark 1.6.x before 1.6.3 does not initialize a certain variable, 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 | 1.6.3-1 | — |
| Debian 13 | wireshark | 1.6.3-1 | — |
| Debian 12 | wireshark | 1.6.3-1 | — |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=750643
- 50479 vdb-entry
- http://www.wireshark.org/security/wnpa-sec-2011-17.html
- 46644 third-party-advisory
- http://anonsvn.wireshark.org/viewvc?view=revision&revision=39140
- 76768 vdb-entry
- oval:org.mitre.oval:def:14833 vdb-entry signature
- [oss-security] 20111101 Re: CVE request for wireshark flaws mailing-list
- wireshark-csn1-dissector-dos(71090) vdb-entry
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6351