============================================================ Sun Java System Acccess Manager & Identity Manager Users Enumeration ============================================================ Affected Software: Sun Java System Access Server, OpenSSo Sun Java System Identity Manager Author: Marco Mella - marco[ dot ]mella[at]aboutsecurity[dot]net More information, Advisory and POC URL: http://www.aboutsecurity.net Sun Java System Identity Manager Security Vulnerabilities Sun Java System Identity Manager 7.0 Sun Java System Identity Manager 7.1 Sun Java System Identity Manager 7.1.1 Sun Java System Identity Manager 8.0 Ref: http://sunsolve.sun.com/search/document.do?assetkey=1-66-253267-1 Sun Java System Identity Manager Sun Java System Access Manager 6 2005Q1 (6.3) Sun Java System Access Manager 7 2005Q4 (7.0) Sun Java System Access Manager 7.1 Ref: http://sunsolve.sun.com/search/document.do?assetkey=1-66-242026-1 [Summary] A Security Vulnerability in Sun Java System Access Manager and Identity Manager allow a Remote Unprivileged User to Determine the existence of "guessed" UserID facilitating brute-force attacks. [Proof of Concept] Simple POC for users enumeration on Access Manager and Identity Manager available on http://www.aboutsecurity.net