Multiple directory traversal vulnerabilities in GNU C Library (aka glibc or libc6) before 2.20 allow context-dependent attackers to bypass ForceCommand restrictions and possibly have other unspecified impact via a .. (dot dot) in a (1) LC_*, (2) LANG, or other locale environment variable.
http://linux.oracle.com/errata/ELSA-2015-0092.html
http://www.debian.org/security/2014/dsa-2976
http://www.mandriva.com/security/advisories?name=MDVSA-2014:152
http://www.openwall.com/lists/oss-security/2014/07/10/7
http://www.openwall.com/lists/oss-security/2014/07/14/6
http://www.securityfocus.com/bid/68505
http://www.securitytracker.com/id/1030569
https://rhn.redhat.com/errata/RHSA-2014-1110.html