ZDI-08-021: Adobe Flash Player DeclareFunction2 Invalid Object Use Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-08-021 April 8, 2008 -- CVE ID: CVE-2007-6019 -- Affected Vendors: Adobe -- Affected Products: Adobe Flash Player -- Vulnerability Details: This vulnerability allows remote attackers to execute code on vulnerable installations of Adobe's Flash Player. User interaction is required in that a user must visit a malicious web site. The specific flaw exists when the Flash player attempts to access embedded Actionscript objects that have not been properly instantiated. In order for exploitation to occur, an attacker would have to modify a DeclareFunction2 Actionscript tag within an SWF file. Exploitation of this vulnerability can result in arbitrary code execution under the context of the currently logged in user. -- Vendor Response: Adobe has issued an update to correct this vulnerability. More details can be found at: http://www.adobe.com/support/security/bulletins/apsb08-11.html -- Disclosure Timeline: 2008-02-07 - Vulnerability reported to vendor 2008-04-08 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * Javier Vicente Vallejo * Shane Macaulay CanSecWest 2007 PWN2OWN Winner -- 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/ CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is being sent by 3Com for the sole use of the intended recipient(s) and may contain confidential, proprietary and/or privileged information. Any unauthorized review, use, disclosure and/or distribution by any recipient is prohibited. If you are not the intended recipient, please delete and/or destroy all copies of this message regardless of form and any included attachments and notify 3Com immediately by contacting the sender via reply e-mail or forwarding to 3Com at postmaster (at) 3com (dot) com. [email concealed]