ZDI-09-023: Apple OS X ATSServer Compact Font Format Parsing Memory Corruption Vulnerability

[ZDI Disclosures <zdi-disclosures@xxxxxxxxxxxxxxxx>]

ZDI-09-023: Apple OS X Unspecified ATSServer Font Parsing Memory Corruption
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-09-023
May 13, 2009

-- CVE ID:
CVE-2009-0154

-- Affected Vendors:
Apple

-- Affected Products:
Apple OS X

-- Vulnerability Details:
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 Response:
Apple has issued an update to correct this vulnerability. More
details can be found at:

http://support.apple.com/kb/HT3549

-- Disclosure Timeline:
2009-03-19 - Vulnerability reported to vendor
2009-05-13 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Charlie Miller, Independent Security Evaluators

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