It was discovered that multiple CGI scripts used by Red Hat / Fedora Directory Server did not properly sanitize %-escaped inputs, resulting in a possibility to conduct cross-site scripting (XSS) attacks.

Issue was caused by a flow in an adminutil library that contain common functionality used by multiple CGI scripts, such as affected GET / POST argument parsing.

Issue is know to affect some Administration Express scripts and Directory Server Gateway (DSGW) scripts.

Affected version: Red Hat Directory Server 7.1 Red Hat Directory Server 8 (flaw limited to Administration Express issues, as DSGW component is not shipped) Fedora Directory Server

Red Hat Administration Server, as used by Red Hat Directory Server 8.0 EL4 and EL5, does not properly restrict access to CGI scripts, which allows remote attackers to perform administrative actions.