_________________________________________________________ DePaul University Computer Security Response Team C S R T _________________________________________________________ Computer Security Vulnerability Alert _____________________________________________________________________ 23:18 -0500 2003-08-20 SUMMARY Cummulative Updates for Microsoft Internet Explorer SEVERITY Critical ** Please contact CSRT at immediately * ** if you have determined your computer has been compromised.* ** For more assistance with this vulnerability, contact the * ** DePaul University helpdesk at 312-362-8765. * PLATFORM Microsoft Windows Operating Systems running the following versions of Internet Explorer: - Microsoft Internet Exporer 5.01 - Microsoft Internet Exporer 5.5 - Microsoft Internet Exporer 6.0 - Microsoft Internet Exporer 6.0 for Windows 2003 Server IMPACT Privilege escalation and abuse of the cross domain security model built into Internet Explorer; possible privilege escalation on the local system. FIX Please visit the Microsoft Windows Update website listed at the bottom of this vulnerability alert. SCOPE All University computers running Microsoft Windows and the affected versions of Internet Explorer listed above. DETAILS 1. Vulnerabilities exist in the handling of cross-domain security measures that protect different domains from sharing information. An attacker may be able to convince a user to visit a webpage to download malicious code and inspect information from other domains, remotely. 2. A vulnerabilty exists in Internet Explorer's handling of object types in an HTTP request of a web page. This flaw may also exist in locally parsed HTML email. An attack would be permitted access to running malicious code on the vulnerable computer in the context of the logged on user. EXPLOIT No exploits have been reported at this time. CSRT will monitor activity and report if other exploits are found. ALERTID CSRT2003082001 REVISION Id: csrt-va2003082001.txt,v 1.1 2003/08/21 04:18:14 epancer Exp ______________________________________________________________________ MORE INFO o Windows Update Website o Copy of this CSRT Alert o Microsoft Security Bulletin MS03-032 ______________________________________________________________________ _____________________________END OF ALERT_____________________________