Hi, Thanks for the email. This error was not an overflow issue but a bug in the service (i.e. the error would cause the service to stop, but could the exploiter could not exploit this further or run code on the server). A fix for the bug can be found at: http://www.mailenable.com/hotfix Thanks Peter Fregon MailEnable Pty. Ltd. -----Original Message----- From: Oliver@xxxxxxxxxx [mailto:Oliver@xxxxxxxxxx] Sent: Saturday, 15 May 2004 10:41 PM To: bugtraq@xxxxxxxxxxxxxxxxx Cc: info@xxxxxxxxxxxxxx Subject: Remote Buffer Overflow in MailEnable HTTPMail Regarding to the heap overflow vulnerability of MailEnable HTTPMail (http://www.securityfocus.com/bid/10312), i installed the latest hotfix (http://mailenable.com/hotfix/MEHTTPS.zip), and found an additional overflow. Sending a request like: c:\telnet localhost 8080 GET / HTTP/1.0 Authorization: A Crashes the services. The overflow seems to occur in the Authorization header variable. A single character will lead to the crash. I did no further research in order to fully exploit this vuln. A more detailed readme can be found on my website: www.oliverkarow.de/research/MailWebHTTPAuthCrash.txt