automount 5.0.8, when a program map uses certain interpreted languages, uses the calling user's USER and HOME environment variable values instead of the values for the user used to run the mapped program, which allows local users to gain privileges via a Trojan horse program in the user home directory.
https://bugzilla.suse.com/show_bug.cgi?id=917977
https://bugzilla.redhat.com/show_bug.cgi?id=1192565
http://www.ubuntu.com/usn/USN-2579-1
http://www.securityfocus.com/bid/73211
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://rhn.redhat.com/errata/RHSA-2015-1344.html
http://lists.opensuse.org/opensuse-updates/2015-03/msg00033.html