wnpa-sec-2021-12 · C12.22 dissector crash
Summary
Name: C12.22 dissector crash
Docid: wnpa-sec-2021-12
Date: November 17, 2021
Affected versions: 3.4.0 to 3.4.9, 3.2.0 to 3.2.17
Fixed versions: 3.4.10, 3.2.18
References:
Wireshark issue 17636.
CVE-2021-39922.
Details
Description
The C12.22 dissector could crash. Discovered by Doneing.
Impact
It may be possible to make Wireshark crash by injecting a malformed packet onto the wire or by convincing someone to read a malformed packet trace file.
Resolution
Upgrade to Wireshark 3.4.10, 3.2.18 or later.