RE: Remote Buffer Overflow in MailEnable HTTPMail

["MailEnable Sales" <info () mailenable com>]

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 () greyhat de [mailto:Oliver () greyhat de] 
Sent: Saturday, 15 May 2004 10:41 PM
To: bugtraq () securityfocus com
Cc: info () mailenable com
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