-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ZDI-11-346 : Microsoft Office 2007 Office Art Shape Record Hierarchy Parsing Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-11-346 December 13, 2011 - -- CVE ID: CVE-2011-3413 - -- CVSS: 7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P - -- Affected Vendors: Microsoft Microsoft - -- Affected Products: Microsoft Office Excel Microsoft Office PowerPoint - -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 11931. 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 2007. 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 how the application processes a shape record hierarchy. Due to the application not properly checking the types of elements within containers, the application will incorrectly modify a property of the object. This modification can be used to cause memory corruption of the type which can lead to code execution under the context of 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/MS11-094 - -- Disclosure Timeline: 2011-06-29 - Vulnerability reported to vendor 2011-12-13 - 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) iQEcBAEBAgAGBQJO58YQAAoJEFVtgMGTo1scY5AH/ihf6DYB2HSDkGandSrub6yQ NYbm0PmI7XitaW2UuefSxIXEi8t0duj8vJSIIcGRaMCKVSOdp7cU9lQ/ORwLZ3J7 s/Ix/HMH9Bscz0gNtSu1kY1r8laVGsa2WrJON8nxsMaPXvEEYMS5Hg6S5kLfDvoi zwHBy/6LZJv21M6RyW5Dsmwksk5v4sjQBnnldCb0MyGKuHPeGBg8agbmHW2rFX+H w9+FOqbtMSddEjZx6+sfHYgH8bg3I//+XLeDaKh0TDQv0pBYvb2WEsvi6R6yJbfV BXyFB55LeKOoz1oD15KBZ/LrW8dXzkU/oFN7YbZF/efiO68tDrgxbuCcLUlXXOM= =XTKD -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/