Adobe Shockwave TextXtra Text Element Parsing Remote Code Execution VulnerabilityZDI-11-204: June 14th, 2011
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11297. For further product information on the TippingPoint IPS:
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 TextXtra.x32 module responsible for parsing text elements within RIFF-based Director files. The code within this module trusts various length and count values present in the file. By crafting certain values an attacker can wrap arithmetic operations and subsequently under-allocate a heap buffer. This can be leveraged to execute remote code under the context of the user running the browser.
Vendor ResponseAdobe has issued an update to correct this vulnerability. More details can be found at:
2011-04-01 - Vulnerability reported to vendor
2011-06-14 - Coordinated public release of advisory
CreditThis vulnerability was discovered by: