locale/programs/locale.c in locale in the GNU C Library (aka glibc or libc6) before 2.13 does not quote its output, which might allow local users to gain privileges via a crafted localization environment variable, in conjunction with a program that executes a script that uses the eval function.
bugs.gentoo.org/show_bug.cgi?id=330923
openwall.com/lists/oss-security/2011/03/08/21
openwall.com/lists/oss-security/2011/03/08/22
openwall.com/lists/oss-security/2011/03/08/8
secunia.com/advisories/43830
secunia.com/advisories/43976
secunia.com/advisories/43989
secunia.com/advisories/46397
security.gentoo.org/glsa/glsa-201011-01.xml
securitytracker.com/id?1025286
sources.redhat.com/bugzilla/show_bug.cgi?id=11904
sourceware.org/bugzilla/show_bug.cgi?id=11904
sourceware.org/git/?p=glibc.git%3Ba=patch%3Bh=026373745eab50a683536d950cb7e17dc98c4259
www.mandriva.com/security/advisories?name=MDVSA-2011:178
www.redhat.com/support/errata/RHSA-2011-0412.html
www.redhat.com/support/errata/RHSA-2011-0413.html
www.securityfocus.com/archive/1/520102/100/0/threaded
www.vmware.com/security/advisories/VMSA-2011-0012.html
www.vupen.com/english/advisories/2011/0863
bugzilla.redhat.com/show_bug.cgi?id=625893
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12272