wnpa-sec-2021-10 · Bluetooth DHT dissector large loop

Summary

Name: Bluetooth DHT dissector large loop

Docid: wnpa-sec-2021-10

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 17677
CVE-2021-39924

Details

Description

The Bluetooth DHT 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.