CUPS 1.1.20 and earlier records authentication information for a device URI in the error_log file, which allows local users to obtain user names and passwords.
lists.apple.com/archives/security-announce/2004/Oct/msg00000.html
www.ciac.org/ciac/bulletins/p-002.shtml
www.debian.org/security/2004/dsa-566
www.kb.cert.org/vuls/id/557062
www.mandriva.com/security/advisories?name=MDKSA-2004:116
www.redhat.com/support/errata/RHSA-2004-543.html
www.securityfocus.com/bid/11324
exchange.xforce.ibmcloud.com/vulnerabilities/17593
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10710