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CERT Coordination Center

Apple Mac OS X ATS data-font memory corruption vulnerability

Vulnerability Note VU#403593

Original Release Date: 2012-02-02 | Last Revised: 2012-03-28


Apple Mac OS X ATS contains a memory corruption vulnerability that may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.


Apple Mac OS X ATS (Apple Type Services) fails to properly handle malformed data-font (.dfont) files, resulting in memory corruption.


By convincing a user to open a specially-crafted font in Font Book, a remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system.


Apply an update

This issue is addressed in OS X Lion v10.7.3 and Security Update 2012-001.

Vendor Information

Affected   Unknown   Unaffected

Apple Inc.

Notified:  October 20, 2011 Updated:  February 02, 2012



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Vendor References

CVSS Metrics

Group Score Vector
Base 9.0 AV:N/AC:M/Au:N/C:C/I:C/A:P
Temporal 7.0 E:POC/RL:OF/RC:C
Environmental 7 CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND



This vulnerability was reported by Will Dormann of the CERT/CC.

This document was written by Will Dormann.

Other Information

CVE IDs: CVE-2011-3446
Severity Metric: 2.57
Date Public: 2012-02-02
Date First Published: 2012-02-02
Date Last Updated: 2012-03-28 14:53 UTC
Document Revision: 18

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