wnpa-sec-2017-02 · DHCPv6 large loop

Summary

Name: DHCPv6 large loop

Docid: wnpa-sec-2017-02

Date: January 23, 2017

Affected versions: 2.2.0 to 2.2.3, 2.0.0 to 2.0.9

Fixed versions: 2.2.4, 2.0.10

References:
Wireshark issue 13345
CVE-2017-5597

Details

Description

The DHCPv6 dissector could go into a large loop. Discovered by Antti Levomäki and Christian Jalio, Forcepoint.

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 2.2.4, 2.0.10 or later.