Arch Linux Security Advisory ASA-201503-23 ========================================== Severity: Medium Date : 2015-03-24 CVE-ID : CVE-2014-9114 Package : util-linux Type : command injection Remote : No Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package util-linux before version 2.26.1-3 is vulnerable to command injection via malicious devices. Resolution ========== Upgrade to 2.26.1-3. # pacman -Syu "util-linux>=2.26.1-3" The problem has been fixed upstream in version 2.26. Workaround ========== None. Description =========== There is a command injection inside blkid. It uses caching files (/dev/.blkid.tab or /run/blkid/blkid.tab) to store info about the UUID, LABEL etc it finds on certain devices. However, it does not strip " character, so it can be confused to build variable names containing embedded shell metas, which it would usually encode inside the value. Impact ====== An attacker is able to use a specially prepared device with a malicious label to potentially inject arbitrary shell commands when mounted with a wrapper that uses 'blkid -o' passed to eval. References ========== http://seclists.org/oss-sec/2014/q4/811 https://access.redhat.com/security/cve/CVE-2014-9114 https://bugs.archlinux.org/task/43886