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Zero Day Initiative Advisory 11-213

Zero Day Initiative Advisory 11-213
Posted Jun 14, 2011
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 11-213 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of the Adobe Shockwave Player. 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 parsing of the rcsL RIFF chunk within Director files. When handling specific structures within this chunk, the process trusts an offset and uses it to calculate a pointer value. By modifying this element an attacker can force the application to corrupt memory at a controlled location. This can be leveraged by an attacker to execute arbitrary code under the context of the user running the browser.

tags | advisory, remote, arbitrary
advisories | CVE-2011-2114
SHA-256 | df4e10793b2e4e485be19b31ec65b5d6273cc4bb1017ffebe49a2f5b0fe7e4dc

Zero Day Initiative Advisory 11-213

Change Mirror Download
ZDI-11-213: Adobe Shockwave rcsL Trusted Offset Chunk Processing Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-213

June 14, 2011

-- CVE ID:
CVE-2011-2114

-- CVSS:
7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)

-- Affected Vendors:
Adobe

-- Affected Products:
Adobe Shockwave Player

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 11346.
For further product information on the TippingPoint IPS, visit:

http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of the Adobe Shockwave Player. 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 parsing of the rcsL RIFF chunk
within Director files. When handling specific structures within this
chunk, the process trusts an offset and uses it to calculate a pointer
value. By modifying this element an attacker can force the application
to corrupt memory at a controlled location. This can be leveraged by an
attacker to execute arbitrary code under the context of the user running
the browser.

-- Vendor Response:
Adobe has issued an update to correct this vulnerability. More
details can be found at:

http://www.adobe.com/support/security/bulletins/apsb11-17.html

-- Disclosure Timeline:
2011-04-01 - Vulnerability reported to vendor
2011-06-14 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
* Aniway (Aniway.Anyway@gmail.com)

-- 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

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