Buffer overflow in Linuxconf before 1.28r4 allows local users to execute arbitrary code via a long LINUXCONF_LANG environment variable, which overflows an error string that is generated.
http://www.solucorp.qc.ca/changes.hc?projet=linuxconf&version=1.28r4
http://www.iss.net/security_center/static/9980.php
http://archives.neohapsis.com/archives/vulnwatch/2002-q3/0093.html