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Apple QuickTime contains an integer overflow in the "QuickTime.qts" extension

Vulnerability Note VU#782958

Original Release Date: 2004-05-03 | Last Revised: 2004-05-04


Apple QuickTime contains an integer overflow vulnerability in the "QuickTime.qts" extension, which could result in arbitrary code execution.


Apple's QuickTime Player is a player that allow users to view local and remote audio/video content. Other applications, such as web browsers, that wish to utilize QuickTime functionality must use the QuickTime extension (QuickTime.qts) component. This component contains an integer overflow vulnerability in the routine responsible for copying Sample-to-Chunk table entries into an array.

According to the QuickTime File Format specification, a Sample-to-Chunk atom contains a 4-byte "number of entries" field specifying the count of entries in the sample-to-chunk-table. If the "number of entries" field contains an overly large value, an integer overflow could occur, which could allow an attacker to overwrite portions of heap memory.

For more information on QuickTime atoms, please refer to Apple's QuickTime File Format specification.


By convincing a user to execute a specially crafted QuickTime file, an attacker could cause QuickTime to crash or potentially execute arbitrary code.


Upgrade to QuickTime version 6.5.1.

Vendor Information


Apple Computer Inc. Affected

Updated:  May 03, 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.


This vulnerability has been addressed in QuickTime version 6.5.1.

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

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This vulnerability was reported by eEye Digital Security.

This document was written by Damon Morda.

Other Information

CVE IDs: CVE-2004-0431
Severity Metric: 27.00
Date Public: 2004-02-18
Date First Published: 2004-05-03
Date Last Updated: 2004-05-04 18:29 UTC
Document Revision: 22

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