mgetty 1.1.22 allows local users to overwrite arbitrary files via a symlink attack in some configurations.
https://exchange.xforce.ibmcloud.com/vulnerabilities/5918
http://www.securityfocus.com/bid/2187
http://www.redhat.com/support/errata/RHSA-2001-050.html
http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-009.php3
http://www.debian.org/security/2001/dsa-011
http://www.calderasystems.com/support/security/advisories/CSSA-2001-002.0.txt