Apple QuickTime AVI Header nBlockAlign Heap Corruption VulnerabilityZDI-09-006: January 21st, 2009
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6642. For further product information on the TippingPoint IPS:
This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Apple QuickTime. 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 AVI files. When the AVI header contains a malformed nBlockAlign value in the _WAVEFORMATEX structure, a heap overflow may occur which can be leveraged to execute arbitrary code under the context of the current user.
Vendor ResponseApple has issued an update to correct this vulnerability. More details can be found at:
2008-10-15 - Vulnerability reported to vendor
2009-01-21 - Coordinated public release of advisory
CreditThis vulnerability was discovered by: