CVE-2020-21047

Name	CVE-2020-21047
Description	The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3579-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
elfutils (PTS)	buster	0.176-1.1	vulnerable
	buster (security)	0.176-1.1+deb10u1	fixed
	bullseye	0.183-1	fixed
	bookworm	0.188-2.1	fixed
	sid, trixie	0.191-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
elfutils	source	buster	0.176-1.1+deb10u1		DLA-3579-1
elfutils	source	(unstable)	0.180-1

Notes

https://sourceware.org/bugzilla/show_bug.cgi?id=25068
https://sourceware.org/git/?p=elfutils.git;a=commit;h=99dc63b10b3878616b85df2dfd2e4e7103e414b8 (elfutils-0.178)