Original Release Date: 2007-03-06 | Last Revised: 2007-03-19
Apple QuickTime is vulnerable to a heap buffer overflow which may allow an attacker to execute arbitrary code or crash the system.
A vulnerability exists in the way Apple QuickTime handles specially crafted QuickTime Image (QTIF) files. According to Apple QuickTime 7.1.5 security document 305149:
A heap buffer overflow exists in QuickTime's handling of QTIF files. By enticing a user to access a maliciously-crafted QTIF file, an attacker can trigger the overflow, which may lead to an application crash or arbitrary code execution.
This vulnerability may be triggered by sending a specially crafted QTIF file to QuickTime or an application that uses the QuickTime plug-in.
Note that this issue affects QuickTime installations on both Apple Mac OS X and Microsoft Windows operating systems.
A remote, unauthenticated attacker may be able to execute arbitrary code or crash the system.
Apply an Update
This issue is addressed in Apple QuickTime 7.1.5 security document 305149. An update for Mac OS X and Microsoft Windows is available on Apple Downloads and via Software Update.
Disable the QuickTime ActiveX controls in Internet Explorer
The vulnerable QuickTime ActiveX controls can be disabled in Internet Explorer by setting the kill bit for the following CLSIDs:
More information about how to set the kill bit is available in Microsoft Support Document 240797. Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for these controls:
Disable the QuickTime plug-in for Mozilla-based browsers
Users of Mozilla-based browsers, such as Firefox can disable the QuickTime plugin, as specified in the PluginDoc article Uninstalling Plugins.
Disable file association for QuickTime files
Disable the file association for QuickTime file types to help prevent windows applications from using Apple QuickTime to open QuickTime files. This can be accomplished by deleting the following registry keys:
This will remove the association for approximately 32 file types that are configured to open with the QuickTime Player software.
Do not access QuickTime files from untrusted sources
Attackers may host malicious QuickTime files on web sites. In order to convince users to visit their sites, those attackers often use a variety of techniques to create misleading links including URL encoding, IP address variations, long URLs, and intentional misspellings. Do not click on unsolicited links received in email, instant messages, web forums, or internet relay chat (IRC) channels. Type URLs directly into the browser to avoid these misleading links. While these are generally good security practices, following these behaviors will not prevent exploitation of this vulnerability in all cases, particularly if a trusted site has been compromised or allows cross-site scripting.