zhcon before 0.2 does not drop privileges before reading a user configuration file, which allows local users to read arbitrary files.
https://exchange.xforce.ibmcloud.com/vulnerabilities/19045
http://www.securityfocus.com/bid/12343
http://www.mandriva.com/security/advisories?name=MDKSA-2005:012
http://securitytracker.com/id?1012977
http://secunia.com/advisories/13987