Determina Security Research has discovered a denial of service vulnerability in the code responsible for parsing iCal email attachments in Microsoft Exchange. This vulnerability can be exploited by a malicious email message and results in a denial of service. The vulnerable code is present in Exchange 2000 and 2003.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/56604/modprops-dos.txt
Source: https://packetstormsecurity.com/files/56604/modprops-dos.txt.html

