---------------------------------------------------------------------- SNS Advisory No.54 Active! mail Executing the Script upon the Opening of a Mail Message Vulnerability Problem first discovered: Fri, 31 May 2002 Published: Wed, 13 June 2002 ---------------------------------------------------------------------- Overview: --------- Active! mail displays messages without converting them properly when a specific e-mail header contains HTML tags. Problem Description: -------------------- Active! mail developed and distributed by TransWARE Co., (http://www.transware.co.jp/), is a web-based e-mail system. Active! mail displays messages without converting them properly when a specific e-mail header contains HTML tags. If for example, a user receives an e-mail embedding a malicious <script> tag in the header, this script will run upon opening the e-mail message. Exploitation could result in the disclosure of the user's cookie information and in the possibility for an attacker to misuse the Web mail system. Tested Versions: ---------------- Active! mail 1.422 Active! mail 2.0 Solution: --------- This problem can be eliminated by updating to Active! mail ver.2.0.1.1, which is available at: http://www.transware.co.jp/active/download/am_download.html Discovered by: -------------- Keigo Yamazaki (LAC) Disclaimer: ----------- All information in these advisories are subject to change without any advanced notices neither mutual consensus, and each of them is released as it is. LAC Co.,Ltd. is not responsible for any risks of occurrences caused by applying those information. ------------------------------------------------------------------ SecureNet Service(SNS) Security Advisory <snsadv@lac.co.jp> Computer Security Laboratory, LAC http://www.lac.co.jp/security/
