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CERT Coordination Center

Apple Mac OS X CoreText uninitialized pointer vulnerability

Vulnerability Note VU#498105

Original Release Date: 2007-11-14 | Last Revised: 2007-11-15


Apple Mac OS X CoreText contains an uninitialized pointer vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.


Apple Mac OS X CoreText is a framework for handling text on Mac OS X Tiger (10.4) and later. Mac OS X CoreText fails to properly initialize pointers, which can cause memory corruption. Any application that uses the CoreText framework for handling text may be vulnerable.


By convincing a user to view specially crafted text, a remote, unauthenticated attacker may be able to execute arbitrary code or cause a denial of service on a vulnerable system.


Apply an update

This issue is addressed in Mac OS X 10.4.11 and Apple Security Update 2007-008.

Vendor Information


Apple Computer, Inc. Affected

Notified:  October 24, 2006 Updated: November 12, 2007



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

CVSS Metrics

Group Score Vector



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

This document was written by Will Dormann.

Other Information

CVE IDs: CVE-2007-4682
Severity Metric: 7.76
Date Public: 2007-10-14
Date First Published: 2007-11-14
Date Last Updated: 2007-11-15 15:31 UTC
Document Revision: 8

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