Buffer overflow in the preprocessor in groff 1.16 and earlier allows remote attackers to gain privileges via lpd in the LPRng printing system.
https://exchange.xforce.ibmcloud.com/vulnerabilities/7881
http://www.securityfocus.com/bid/3869
http://www.redhat.com/support/errata/RHSA-2002-004.html
http://www.linux-mandrake.com/en/security/2002/MDKSA-2002-012.php