CVE-2006-5681 in Mac OS X
Summary
by MITRE
QuickTime for Java on Mac OS X 10.4 through 10.4.8, when used with Quartz Composer, allows remote attackers to obtain sensitive information (screen images) via a Java applet that accesses images that are being rendered by other embedded QuickTime objects.
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Analysis
by VulDB Data Team • 06/15/2025
This vulnerability exists in QuickTime for Java component of Mac OS X versions 10.4 through 10.4.8 when integrated with Quartz Composer framework. The flaw represents a critical information disclosure issue that enables remote attackers to access sensitive screen images through malicious Java applets. The vulnerability stems from insufficient access controls and memory management within the QuickTime Java plugin implementation, specifically when processing multiple embedded QuickTime objects within the Quartz Composer environment. The technical root cause involves improper handling of shared memory segments and object references between different QuickTime rendering contexts, allowing cross-object data leakage.
The operational impact of this vulnerability is severe as it permits unauthorized information extraction without user consent or explicit authorization. Attackers can craft malicious Java applets that exploit the flawed memory management to capture screen images from other QuickTime objects currently being rendered, potentially exposing sensitive data, user interfaces, or confidential information displayed on the screen. This represents a classic case of information leakage through improper access control mechanisms and memory sharing between application components. The vulnerability affects the fundamental security model of the QuickTime Java integration, undermining the expected isolation between different media rendering contexts. This issue aligns with CWE-200 (Information Exposure) and represents a privilege escalation vector through information disclosure.
The attack scenario typically involves a remote web server hosting a malicious Java applet that leverages the QuickTime Java plugin's memory management flaw. When a user visits the compromised website, the Java applet executes within the browser context and accesses QuickTime objects that are currently rendering content, thereby capturing screen images from other embedded QuickTime components. The vulnerability can be exploited through web browsers that support Java applets and have QuickTime for Java installed, making it particularly dangerous in enterprise environments where users frequently access untrusted web content. This attack pattern corresponds to techniques described in the ATT&CK framework under T1059.007 (Command and Scripting Interpreter: JavaScript) and T1068 (Exploitation for Privilege Escalation) categories.
Mitigation strategies include immediate patching of affected Mac OS X versions through Apple's security updates, disabling Java applet support in web browsers, and implementing network-level restrictions to prevent access to untrusted websites containing malicious QuickTime content. Organizations should also consider implementing application whitelisting policies to prevent execution of unauthorized Java applets and monitor for suspicious network traffic patterns indicating exploitation attempts. The recommended approach involves comprehensive system hardening through patch management, security configuration reviews, and regular vulnerability assessments to prevent similar issues in the future. Additionally, users should be educated about the risks of visiting untrusted websites and the importance of keeping their systems updated with the latest security patches.