wnpa-sec-2021-17 · RTMPT dissector infinite loop

Summary

Name: RTMPT dissector infinite loop

Docid: wnpa-sec-2021-17

Date: December 29, 2021

Affected versions: 3.6.0, 3.4.0 to 3.4.10

Fixed versions: 3.6.1, 3.4.11

References:
Wireshark issue 17745
CVE-2021-4185

Details

Description

The RTMPT dissector could go into an infinite 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 3.6.1, 3.4.11 or later.