Apple OS X ATSServer Compact Font Format Parsing Memory Corruption VulnerabilityZDI-09-023: May 13th, 2009
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple OS X. 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 appears to exist in the ATSServer font server upon parsing of malicious Compact Font Format files. A boundary condition exists in the parsing of internal dictionaries that can lead to a memory corruption allowing the execution of arbitrary code.
Vendor ResponseApple has issued an update to correct this vulnerability. More details can be found at:
2009-03-19 - Vulnerability reported to vendor
2009-05-13 - Coordinated public release of advisory
CreditThis vulnerability was discovered by:
Charlie Miller, Independent Security Evaluators