full-disclosure - ZDI-10-286: Microsoft Exchange 2007 Infinite Loop Denial of Service Vulnerability

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Message-ID: <EE499D69B3D0714590B6FE9762B0461104BFE98FA9@emb01.unity.local>
Date: Tue, 14 Dec 2010 14:40:32 -0600
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'Full Disclosure (full-disclosure@...ts.grok.org.uk)'"
	<full-disclosure@...ts.grok.org.uk>,
	"'Bugtraq (bugtraq@...urityfocus.com)'" <bugtraq@...urityfocus.com>
Subject: ZDI-10-286: Microsoft Exchange 2007 Infinite Loop
 Denial of Service Vulnerability

ZDI-10-286: Microsoft Exchange 2007 Infinite Loop Denial of Service Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-10-286

December 14, 2010

-- CVE ID:
CVE-2010-3937

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

-- Affected Vendors:
Microsoft

-- Affected Products:
Microsoft Exchange

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 10715.
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows attackers to deny services on vulnerable
installations of Microsoft Exchange Server 2007. Authentication is
required to exploit this vulnerability.

The specific flaw exists within store.exe during the handling of a
particular MAPI call. The service will enter a loop whose termination is
controlled by an attacker. If the attacker specifies an invalid value,
the loop will never terminate causing the service to stop responding to
requests. This results in a denial of service against the target server.

-- Vendor Response:
Microsoft has issued an update to correct this vulnerability. More
details can be found at:

http://www.microsoft.com/technet/security/bulletin/MS10-106.mspx

-- Disclosure Timeline:
2009-10-27 - Vulnerability reported to vendor
2010-12-14 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Oleksandr Mirosh

-- 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
used. TippingPoint does not re-sell the vulnerability details or any
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
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

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