CVE-2018-18520

Published: 19 October 2018

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.

Priority

Low

CVSS 3 base score: 6.5

Status

Package Release Status
elfutils
Launchpad, Ubuntu, Debian
Upstream
Released (0.175-1)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(0.176-1.1)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(0.176-1.1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (0.170-0.4ubuntu0.1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (0.165-3ubuntu1.2)
Ubuntu 14.04 ESM (Trusty Tahr) Needs triage

Patches:
Upstream: https://sourceware.org/git/?p=elfutils.git;a=commit;h=22d2d082d57a7470fadc0eae67179553f4919209