[SEC-1 Advisory] GFI MailSecurity 8.1 Web Module Buffer Overflow

From: Gary Oleary-Steele (garyo_at_sec-1.com)
Date: 10/12/05

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    Date: Wed, 12 Oct 2005 11:59:37 +0100
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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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