-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ZDI-12-135 : Apple QuickTime JPEG2k Sample Size Atom Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-12-135 August 3, 2012 - -- CVE ID: CVE-2012-0661 - -- CVSS: 7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P - -- Affected Vendors: Apple - -- Affected Products: Apple QuickTime - -- 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 Apple QuickTime handles movies with the jpeg2k codec. When the size for a sample defined in the stsz atom is too big the QuickTime player fails to allocate the required memory for that sample. A pointer to the previous sample data still exists after the previous sample got freed. This pointer normally gets updated to point to the current sample data, but this does not happen when the allocation fails. The QuickTime player then re-uses the stale pointer and a use-after-free situation occurs. This can lead to remote code execution under that context of the current process. - -- Vendor Response: Apple has issued an update to correct this vulnerability. More details can be found at: http://support.apple.com/kb/HT1222 - -- Disclosure Timeline: 2011-11-29 - Vulnerability reported to vendor 2012-08-03 - 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 -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 10.2.0 (Build 1950) Charset: utf-8 wsBVAwUBUBwsnlVtgMGTo1scAQKEnwf9GAYOfc9ZSFXF6Im/trySm24x08qSirsT 8BFtEPk/7Sn6rBT5ml/kQx4XAmJCKfHz9vyYzmj5m9FF2xrdh2YPHOapkLI3yg4K JSoGfeHUP3nzVTAWUp+jXj3+OoM0XBA8illhCfGyOTe7juSV5T3BSXCIkOPdkWoD vw/tm811JUm9i7ek2eQyd8HM4WfI+PcdcSBwFLmzF6y0voV7Q/DSwwZ3D/Wof/bF KjprrQn5soKuxMeDt7F6x49L65SDeozdZLiBVk44USeykYWWATheF39WudQ2t+Mi 90sgcExl0hPpMz3eHKpFJ//KloamgJLnSTqPdmIM6Xs0BPrSLlqing== =sIB5 -----END PGP SIGNATURE-----
