CVE-2008-3624 in QuickTime
Summary
by MITRE
Heap-based buffer overflow in Apple QuickTime before 7.5.5 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a QuickTime Virtual Reality (QTVR) movie file with crafted panorama atoms.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 08/16/2019
The vulnerability identified as CVE-2008-3624 represents a critical heap-based buffer overflow flaw within Apple QuickTime software versions prior to 7.5.5. This security issue specifically affects the processing of QuickTime Virtual Reality movie files and exploits a weakness in how the application handles crafted panorama atoms within QTVR content. The vulnerability resides in the memory management mechanisms of the QuickTime player, where insufficient bounds checking allows maliciously constructed data to overwrite adjacent memory locations on the heap. This type of vulnerability falls under the Common Weakness Enumeration category CWE-121, which describes heap-based buffer overflow conditions where data is written beyond the allocated buffer boundaries in heap memory. The flaw enables attackers to manipulate the heap memory layout and potentially execute arbitrary code or cause application crashes through carefully crafted malicious QTVR files.
The technical exploitation of this vulnerability occurs when a user opens a specially crafted QuickTime Virtual Reality movie file containing maliciously constructed panorama atoms. These atoms are metadata structures that define the visual characteristics and navigation properties of virtual reality content. When the QuickTime player attempts to parse these malformed atoms, the buffer overflow condition triggers, allowing attackers to overwrite critical heap memory regions. The overflow can be leveraged to redirect program execution flow by overwriting return addresses or function pointers stored in the heap. This vulnerability is particularly dangerous because it can be triggered remotely through web-based delivery mechanisms, making it a prime candidate for drive-by download attacks. The attack vector specifically targets the QuickTime plugin or standalone player when processing QTVR content, making it relevant to web browsers that support QuickTime multimedia content through browser plugins or ActiveX controls.
The operational impact of CVE-2008-3624 extends beyond simple application crashes to potentially enable complete system compromise. When successfully exploited, the buffer overflow can result in arbitrary code execution with the privileges of the user running the QuickTime player, which typically runs with the same privileges as the user who launched the application. This represents a significant elevation of privilege risk, particularly in environments where users may have elevated access rights. The vulnerability affects a wide range of Apple operating systems including macOS versions that included vulnerable QuickTime components, making it a widespread concern across the Apple ecosystem. Additionally, the vulnerability's remote exploitation capability means that users can be compromised without any interaction beyond viewing malicious content, making it particularly dangerous in web browsing contexts. The denial of service aspect of the vulnerability can also be weaponized to create persistent availability issues, where legitimate users cannot access QTVR content or the application itself.
Mitigation strategies for CVE-2008-3624 primarily focus on immediate software updates and operational security measures. The most effective solution involves upgrading to Apple QuickTime version 7.5.5 or later, which contains patches addressing the heap buffer overflow vulnerability through improved bounds checking and memory management. Organizations should implement comprehensive patch management procedures to ensure all systems running QuickTime are updated promptly. Network administrators can deploy content filtering solutions to block access to known malicious QTVR content and implement web application firewalls that can detect and prevent exploitation attempts. Security monitoring should include detection of unusual QuickTime plugin behavior or memory access patterns that might indicate exploitation attempts. The vulnerability aligns with several ATT&CK techniques including T1203, which involves exploitation of software vulnerabilities, and T1059, which covers command and script interpretation. Users should disable QuickTime plugin support in web browsers when not actively required, and system administrators should consider implementing sandboxing mechanisms to limit potential damage from successful exploitation attempts. The vulnerability demonstrates the importance of regular security updates and proper input validation in multimedia processing components, as it highlights how legacy multimedia formats can contain exploitable code paths that persist across multiple system versions.