The line printer daemon (lpd) in the lpr package in multiple Linux operating systems allows local users to gain root privileges by causing sendmail to execute with arbitrary command line arguments, as demonstrated using the -C option to specify a configuration file.
ftp://patches.sgi.com/support/free/security/advisories/20021104-01-P
seclists.org/lists/bugtraq/2000/Jan/0116.html
www.atstake.com/research/advisories/2000/lpd_advisory.txt
www.debian.org/security/2000/20000109
www.kb.cert.org/vuls/id/39001
www.l0pht.com/advisories/lpd_advisory
www.redhat.com/support/errata/RHSA-2000-002.html
www.securityfocus.com/bid/927
exchange.xforce.ibmcloud.com/vulnerabilities/3841