CVE-2018-18520

Name	CVE-2018-18520
Description	An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handle_ar in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file.
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-1689-1, DLA-2802-1
Debian Bugs	911414

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
elfutils (PTS)	bullseye	0.183-1	fixed
	bookworm	0.188-2.1	fixed
	sid, trixie	0.192-4	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
elfutils	source	jessie	0.159-4.2+deb8u1		DLA-1689-1
elfutils	source	stretch	0.168-1+deb9u1		DLA-2802-1
elfutils	source	(unstable)	0.175-1	low		911414

Notes

https://sourceware.org/bugzilla/show_bug.cgi?id=23787
https://sourceware.org/ml/elfutils-devel/2018-q4/msg00057.html
https://sourceware.org/git/?p=elfutils.git;a=commit;h=22d2d082d57a7470fadc0eae67179553f4919209