wnpa-sec-2020-14 · FBZERO dissector crash

Summary

Name: FBZERO dissector crash

Docid: wnpa-sec-2020-14

Date: October 29, 2020

Affected versions: 3.2.0 to 3.2.8

Fixed versions: 3.4.0, 3.2.8

References:
Wireshark issue 16887
CVE-2020-26575

Details

Description

The FBZERO protocol dissector could crash.

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 3.4.0, 3.2.8 or later.