bugtraq - ZDI-10-127: Ipswitch Imail Server Mailing List Remote Code Execution Vulnerability

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Message-ID: <EE499D69B3D0714590B6FE9762B0461104BD3C38FC@emb01.unity.local>
Date: Thu, 15 Jul 2010 14:18:33 -0500
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>,
	"'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>
Subject: ZDI-10-127: Ipswitch Imail Server Mailing List Remote Code
 Execution Vulnerability

ZDI-10-127: Ipswitch Imail Server Mailing List Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-127
July 15, 2010

-- CVSS:
9, (AV:N/AC:L/Au:S/C:C/I:C/A:C)

-- Affected Vendors:
Ipswitch

-- Affected Products:
Ipswitch IMail

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 10000. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of IPSwitch IMail. Authentication might be
required to exploit this vulnerability.

The specific flaw exists within imailsrv.exe which is invoked to handle
messages sent to the imailsrv. When a message subject contains a "?Q?"
operator the string following that sequence is copied to a local stack
buffer. No validation of the data or data length is done. 
In order to reach this code path a mailing list must be password
protected (authentication required) or have previously had a password
configured (no authentication required). A remote attacker can exploit
this vulnerability to execute arbitrary code under the context of the
SYSTEM user.

-- Vendor Response:
Ipswitch states:
Update to the latest version 11.02

-- Disclosure Timeline:
2010-06-08 - Vulnerability reported to vendor
2010-07-15 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Anonymous

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents 
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

    http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
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exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
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vendors (including competitors) who have a vulnerability protection or
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