CVE-2021-30501

Name	CVE-2021-30501
Description	An assertion abort was found in upx MemBuffer::alloc() in mem.cpp, in version UPX 4.0.0. The flow allows attackers to cause a denial of service (abort) via a crafted file.
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
upx-ucl (PTS)	stretch	3.91-4	vulnerable
	buster	3.95-1	vulnerable
	bullseye	3.96-2	vulnerable
	sid, bookworm	3.96-3	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
upx-ucl	source	(unstable)	(unfixed)	unimportant

https://github.com/upx/upx/issues/486
https://github.com/upx/upx/pull/487
https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46