TPTI-11-01: Adobe Shockwave dirapi.dll IFWV Trusted Offset Remote Code Execution Vulnerability Feb 09 2011 04:54PM
ZDI Disclosures (zdi-disclosures tippingpoint com)
TPTI-11-01: Adobe Shockwave dirapi.dll IFWV Trusted Offset Remote Code Execution Vulnerability


February 8, 2011

-- CVE ID:

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

-- Affected Vendors:

-- 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 10817.
For further product information on the TippingPoint IPS, visit:


-- 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 DIRAPI.dll module distributed with
the player. While parsing a director movie (.dir or .dcr) the code
trusts the specified size of the IFWV chunk and uses it within a
calculation to determine another offset within the file. By setting it
to 0, the code jumps to the wrong location within the file. While
parsing data at the new location, the code uses a value as a loop
counter. Within the loop, the code copies data to a heap buffer. By
crafting a file with a large enough size, this loop can be forced to
corrupt memory. A remote attacker can abuse this logic to execute
arbitrary code under the context of the user running the application.

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


-- Disclosure Timeline:
2010-11-15 - Vulnerability reported to vendor
2011-02-08 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
* Aaron Portnoy and Logan Brown, TippingPoint DVLabs

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