Format string vulnerability in cfd daemon in GNU CFEngine before 1.6.0a11 allows attackers to execute arbitrary commands via format characters in the CAUTH command.
https://exchange.xforce.ibmcloud.com/vulnerabilities/5630
http://www.securityfocus.com/bid/1757
http://www.linux-mandrake.com/en/security/MDKSA-2000-061.php3?dis=7.1
http://archives.neohapsis.com/archives/bugtraq/2000-10/0004.html