ZDI-10-150: Microsoft Office Word sprmCMajority Record Parsing Remote Code Execution Vulnerability

Type securityvulns
Reporter Securityvulns
Modified 2010-08-11T00:00:00


ZDI-10-150: Microsoft Office Word sprmCMajority Record Parsing Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-10-150 August 11, 2010

-- CVE ID: CVE-2010-1900

-- CVSS: 10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- Affected Vendors: Microsoft

-- Affected Products: Microsoft Office Word

-- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 10122. For further product information on the TippingPoint IPS, visit:


-- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Office Word. User interaction is required to exploit this vulnerability in that the target must open a malicious document.

The specific flaw exists in the parsing of sprmCMajority records in a Word document. Due to the lack of parameter checking when processing sprmCMajority sprm groups it is possible to arbitrarily control the amount of data being written to a stack based buffer resulting in a stack overflow vulnerability which can overwrite critical exception structures. Successful exploitation can lead to remote code execution under the credentials of the currently logged in user.

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


-- Disclosure Timeline: 2009-07-14 - Vulnerability reported to vendor 2010-08-11 - Coordinated public release of advisory

-- Credit: This vulnerability was discovered by: * L.W.Z of team509

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