Adobe Shockwave PFR1 Font Chunk Parsing Remote Code Execution VulnerabilityTPTI-11-05: February 8th, 2011
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10825. For further product information on the TippingPoint IPS:
Vulnerability DetailsThis 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 code responsible for parsing font structures within Director files. While processing data within the PFR1 chunk, the process trusts a size value and compares a sign-extended counter against it within a copy loop. By providing a sufficiently large value, this flaw can be abused by a remote attacker to execute arbitrary 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:
2011-01-24 - Vulnerability reported to vendor
2011-02-08 - Coordinated public release of advisory