Vulnerability Note VU#498105

Apple Mac OS X CoreText uninitialized pointer vulnerability

Overview

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.

I. Description

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.

II. Impact

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.

III. Solution

Apply an update

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

Systems Affected

Vendor	Status	Date Updated
Apple Computer, Inc.	Vulnerable	12-Nov-2007

References

http://docs.info.apple.com/article.html?artnum=307041
http://secunia.com/advisories/27643/

Credit

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

This document was written by Will Dormann.

Other Information

Date Public	10/14/2007
Date First Published	11/14/2007 06:08:55 PM
Date Last Updated	11/15/2007
CERT Advisory
CVE Name	CVE-2007-4682
US-CERT Technical Alerts
Metric	7.76
Document Revision	8

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Produced 2007 by US-CERT, a government organization
Disclaimers and copyright information

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