ZDI-12-186 : Microsoft Office 2007 RTF Mismatch Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-12-186 November 15, 2012 - -- CVE ID: CVE-2012-0183 - -- CVSS: 7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P - -- Affected Vendors: Microsoft - -- Affected Products: Microsoft Office - -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 12309 . 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 Microsoft Office. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of RTF files. The code responsible for lexing control words from the input file does not properly validate that all objects are properly defined. By removing terminating values within an RTF file an attacker can cause the program to re-use a freed object. Combined with basic memory layout control an attacker can abuse this situation to achieve code execution under the context of the user running the application. - -- Vendor Response: Microsoft has issued an update to correct this vulnerability. More details can be found at: http://technet.microsoft.com/en-us/security/bulletin/ms12-029 - -- Disclosure Timeline: 2011-11-29 - Vulnerability reported to vendor 2012-11-15 - 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 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: http://www.zerodayinitiative.com/advisories/disclosure_policy/ Follow the ZDI on Twitter: http://twitter.com/thezdi