Squid Web Proxy Cache 2.5 might allow remote attackers to obtain sensitive information via URLs containing invalid hostnames that cause DNS operations to fail, which results in references to previously used error messages.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9711
https://exchange.xforce.ibmcloud.com/vulnerabilities/18406
http://www.squid-cache.org/bugs/show_bug.cgi?id=1143
http://www.securityfocus.com/bid/11865
http://www.redhat.com/support/errata/RHSA-2005-766.html
http://securitytracker.com/id?1012466
http://secunia.com/advisories/16977