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Apple Mac OS X CoreFoundation CFPlugIn facilities automatically load plug-in executables

Vulnerability Note VU#704110

Original Release Date: 2004-09-09 | Last Revised: 2004-09-09


There is a vulnerability in the Mac OS X CoreFoundation framework that could allow a local attacker to gain elevated privileges.


The Core Foundation framework (CoreFoundation.framework) is designed to allow code and data sharing between frameworks, libraries, and applications in different environments and layers. It includes the CFPlugIn, which provides a standard architecture for application extensions. There is a vulnerability in the way CoreFoundation loads user-supplied libraries for applications using the CFPlugIn facilities.


An authenticated local attacker could cause an application using the CoreFoundation CFPlugIn facilities to load a user-supplied library. Exploitation of this vulnerability on privileged applications could allow an attacker to gain elevated privileges.


Apple has released a patch to address this vulnerability. For further details, please see the Apple Security Advisory (Security Update 2004-09-07).

Vendor Information


Apple Computer Inc. Affected

Updated:  September 09, 2004



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.


Please refer to the Apple Security Advisory.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector



This vulnerability was reported by Apple.

This document was written by Damon Morda based on information provided by Apple.

Other Information

CVE IDs: CVE-2004-0821
Severity Metric: 5.91
Date Public: 2004-09-08
Date First Published: 2004-09-09
Date Last Updated: 2004-09-09 21:06 UTC
Document Revision: 20

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