ZDI-10-091: Apple Webkit Attribute Child Removal Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-10-091 June 8, 2010 -- CVE ID: CVE-2010-1119 -- Affected Vendors: Apple -- Affected Products: Apple WebKit -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 9853. For further product information on the TippingPoint IPS, visit: http://www.tippingpoint.com -- Vulnerability Details: This vulnerability allows remote attackers to execute remote code on vulnerable installations of Apple Webkit. User interaction is required in that a target must be coerced into visiting a malicious page. The specific flaw exists within Webkit's process for destructing attribute objects via the removeChild method. If an attribute's child object is accessed after the attribute was removed from the document, an invalid pointer is referenced. This can be exploited by an attacker to execute remote code under the context of the user running the browser. -- Vendor Response: Apple has issued an update to correct this vulnerability. More details can be found at: http://support.apple.com/kb/HT4196 -- Disclosure Timeline: 2010-03-26 - Vulnerability reported to vendor 2010-06-08 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * Ralf Philipp Weinmann and Vincenzo Iozzo * Vincenzo Iozzo -- 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
