CVE-2020-25866

Name	CVE-2020-25866
Description	In Wireshark 3.2.0 to 3.2.6 and 3.0.0 to 3.0.13, the BLIP protocol dissector has a NULL pointer dereference because a buffer was sized for compressed (not uncompressed) messages. This was addressed in epan/dissectors/packet-blip.c by allowing reasonable compression ratios and rejecting ZIP bombs.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severity	medium

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
wireshark (PTS)	stretch	2.6.7-1~deb9u1	fixed
	stretch (security)	2.6.20-0+deb9u1	fixed
	buster	2.6.20-0+deb10u1	fixed
	bullseye, sid	3.4.3-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version
wireshark	source	stretch	(not affected)
wireshark	source	buster	(not affected)
wireshark	source	(unstable)	3.2.7-1

Notes

[buster] - wireshark <not-affected> (Vulnerable code not present)
[stretch] - wireshark <not-affected> (Vulnerable code not present)
https://www.wireshark.org/security/wnpa-sec-2020-13.html
https://gitlab.com/wireshark/wireshark/-/issues/16866