wnpa-sec-2021-11 · PNRP dissector large loop
Summary
Name: PNRP dissector large loop
Docid: wnpa-sec-2021-11
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 17684.
CVE-2021-39923.
Details
Description
The PNRP dissector could go into a large loop
Impact
It may be possible to make Wireshark consume excessive CPU resources 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.