QuickTime is Apple's media player product used to render video and other media. For more information visit http://www.apple.com/quicktime/
QuickTime VR (virtual reality) is a type of image file format supported by Apple's QuickTime. It allows the creation and viewing of photographically captured panoramas and the exploration of objects through images taken at multiple viewing angles.
Remote exploitation of a heap overflow vulnerability in Apple Inc.'s QuickTime media player could allow attackers to execute arbitrary code in the context of the targeted user.
The vulnerability specifically exists in QuickTime Player's handling of Panorama Sample atoms in QuickTime Virtual Reality movie. When processing panorama sample atoms, the size field in the atom header is not validated. QuickTime will copy the specified amount of memory to a fixed-size heap buffer, causing heap corruption.
Exploitation could allow attackers to execute arbitrary code in the context of the current user. To exploit this vulnerability, an attacker must persuade a user into using QuickTime to open a specially crafted QuickTime movie file. This could be accomplished by persuading the user to click a direct link to a malicious VR movie file. Additionally, this vulnerability could be exploited within a malicious web page.
iDefense Labs confirmed this vulnerability exists in QuickTime VR extension 188.8.131.52 as included in QuickTime Player 7.2. Previous versions are suspected to be vulnerable.
Disabling the QuickTime plug-in for browsers can mitigate Web page attack vectors. To do this, uncheck the "Play movies automatically" setting within the QuickTime preferences Browser->Playback tab.
Apple has released QuickTime 7.3 which resolves this issue. More information is available via Apple's QuickTime Security Update page at the URL shown below.
The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2007-4675 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems.
09/13/2007 Initial vendor notification
09/13/2007 Initial vendor response
11/05/2007 Coordinated public disclosure
This vulnerability was reported to VeriSign iDefense by Mario Ballano from 48bits.com.
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Copyright © 2007 Verisign, Inc.
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