CVE-2010-1576 Information

Description

The Cisco Content Services Switch (CSS) 11500 with software before 8.20.4.02 and the Application Control Engine (ACE) 4710 with software before A2(3.0) do not properly handle use of LF CR and LFCR as alternatives to the standard CRLF sequence between HTTP headers which allows remote attackers to bypass intended header insertions or conduct HTTP request smuggling attacks via crafted header data as demonstrated by LF characters preceding ClientCert-Subject and ClientCert-Subject-CN headers aka Bug ID CSCta04885.

Reference

http://osvdb.org/66092 http://securitytracker.com/id?1024167 http://securitytracker.com/id?1024168 http://www.securityfocus.com/archive/1/512144/100/0/threaded http://www.securityfocus.com/bid/41315 http://www.vsecurity.com/resources/advisory/20100702-1/