FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

pubcookie-login-server -- cross site scripting vulnerability

Affected packages
pubcookie-login-server < 3.3.0


VuXML ID 855cd9fa-c452-11da-8bff-000ae42e9b93
Discovery 2006-03-06
Entry 2006-04-05

Nathan Dors of the Pubcookie Project reports:

Multiple non-persistent XSS vulnerabilities were found in the Pubcookie login server's compiled binary "index.cgi" CGI program. The CGI program mishandles untrusted data when printing responses to the browser. This makes the program vulnerable to carefully crafted requests containing script or HTML. If an attacker can lure an unsuspecting user to visit carefully staged content, the attacker can use it to redirect the user to his or her local Pubcookie login page and attempt to exploit the XSS vulnerabilities.

These vulnerabilities are classified as *critical* due to the nature and purpose of the Pubcookie login server for user authentication and Web Single Sign-on (SSO). Specific threats include:

At the heart of these threats lies a violation of the user's trust in the Pubcookie login server.


CERT/CC Vulnerability Note 337585