ZDI-11-277: Apple QuickTime 3g2 'mp4v' atom size Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-11-277 August 31, 2011 -- CVE ID: CVE-2011-0258 -- CVSS: 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P) -- Affected Vendors: Apple -- Affected Products: Apple QuickTime -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 11366. 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 Apple QuickTime. 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 way QuickTime handles 'mp4v' codec information. When parsing the video description table it will read the size field preceding the 'mp4v' tag and use that size to create an allocation to hold the data. It will then copy the correct amount of data into that buffer, but then does some endian changes on a fixed portion of the buffer without checking its size. The resulting memory corruption could result in remote code execution under the context of the current user. -- Vendor Response: Apple has issued an update to correct this vulnerability. More details can be found at: http://support.apple.com/kb/HT4826 -- Disclosure Timeline: 2011-06-03 - Vulnerability reported to vendor 2011-08-31 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * Damian Put -- 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