Advisory Details

April 8th, 2008

Adobe Flash Player DeclareFunction2 Invalid Object Use Vulnerability

ZDI-08-021
ZDI-CAN-277

CVE ID CVE-2007-6019
CVSS SCORE
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS 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 Javier Vicente Vallejo
Shane Macaulay CanSecWest 2008 PWN2OWN Winner
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