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Zero Day Initiative Advisory 08-021

Zero Day Initiative Advisory 08-021
Posted Apr 9, 2008
Authored by Tipping Point | Site zerodayinitiative.com

A 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.

tags | advisory, remote, web, arbitrary, code execution
advisories | CVE-2007-6019
SHA-256 | 8fae64bb0f5479c2daddc21ca71de52bb43fc79e1f3b459d6f50ca7911ac798b

Zero Day Initiative Advisory 08-021

Change Mirror Download
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/

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