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sec-1-GFI-MailSecurity.txt

sec-1-GFI-MailSecurity.txt
Posted Oct 13, 2005
Authored by Gary O'Leary-Steele | Site sec-1.com

Sec-1 has identified an exploitable Buffer Overflow within the HTTP management interface of GFI MailSecurity 8.1. By sending large strings within several areas of the HTTP request (such as a large 'Host' or 'Accept' header) critical portions of memory are overwritten. Verification of this vulnerability can be achieved through the use of a HTTP fuzzer, such as @stake webproxy. Successful exploitation could allow an attacker to gain administrative control of the targeted host.

tags | advisory, web, overflow, fuzzer
SHA-256 | 4300d283bb084186da283e56ddae0e40446b1e8a04f555832a86566d3489b5db

sec-1-GFI-MailSecurity.txt

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                                SEC-1 LTD.
www.sec-1.com

Security Advisory

Advisory Name: GFI MailSecurity 8.1 Web Module Buffer Overflow
Release Date: 12/October/2005
Application: GFI MailSecurity For SMTP version 8.1

Platform: Verified on Windows 2000 Server
Severity: Remote Code Execution
Author: Gary O'leary-Steele
Vendor Status: Patch Released
CVE Candidate: Pending
Reference: http://www.sec-1.com


Overview:

Taken from gfi.com:

GFI MailSecurity for SMTP is a Content filtering, anti-virus and
Email Intrusion prevention product from GFI.

GFI MailSecurity is available as an SMTP gateway version and for
VS API. The gateway version should be deployed at the perimeter
of the network as a mail relay server and scans inbound and
outbound mail. The VS API version integrates seamlessly with
Exchange Server 2000/2003 and scans the Exchange information stores.
Both versions can be deployed simultaneously to achieve optimum
protection.


Vulnerability Details:

Sec-1 has identified an exploitable Buffer Overflow within the HTTP
management interface. By sending large strings within several areas
of the HTTP request (such as a large 'Host' or 'Accept' header)
critical portions of memory are overwritten. Verification of this
vulnerability can be achieved through the use of a HTTP fuzzer, such
as @stake webproxy. Successful exploitation could allow an attacker
to gain administrative control of the targeted host.


Vendor Response:

The vendor has released information and a patch

KB: http://kbase.gfi.com/showarticle.asp?id=KBID002451
Patch: ftp://ftp.gfi.com/patches/MSEC8_PATCH_20050919_01.zip

Common Vulnerabilities and Exposures (CVE) Information:

The Common Vulnerabilities and Exposures (CVE) project has assigned
the following names to these issues. These are candidates for
inclusion in the CVE list (http://cve.mitre.org), which standardizes
names for security problems.


Pending

Copyright 2005 Sec-1 LTD. All rights reserved.
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