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TUCoPS :: Macintosh :: va3518.htm

Apple OS X ATSServer Compact Font Format Parsing Memory Corruption Vulnerability



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



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

-- About the Zero Day Initiative (ZDI):
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a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

http://www.zerodayinitiative.com 

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used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
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Our vulnerability disclosure policy is available online at:

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