Advisory Details

December 14th, 2010

Microsoft Exchange 2007 Infinite Loop Denial of Service Vulnerability

ZDI-10-286
ZDI-CAN-598

CVE ID CVE-2010-3937
CVSS SCORE 6.8, (AV:N/AC:L/Au:S/C:N/I:N/A:C)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Exchange
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10715. For further product information on the TippingPoint IPS: 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.

ADDITIONAL DETAILS 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 Oleksandr Mirosh
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