CVE-2008-1017 in QuickTime
Summary
by MITRE
Heap-based buffer overflow in clipping region (aka crgn) atom handling in quicktime.qts in Apple QuickTime before 7.4.5 allows remote attackers to execute arbitrary code via a crafted movie.
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Analysis
by VulDB Data Team • 06/01/2025
The vulnerability identified as CVE-2008-1017 represents a critical heap-based buffer overflow affecting Apple QuickTime software versions prior to 7.4.5. This flaw resides within the handling of clipping region atoms, specifically within the quicktime.qts component that processes movie files. The vulnerability stems from inadequate bounds checking during the parsing of crgn atom data structures, which are used to define clipping regions within QuickTime movie files. When a maliciously crafted movie file is processed by the vulnerable QuickTime player, the application fails to properly validate the size and contents of the crgn atom, leading to memory corruption that can be exploited by remote attackers.
The technical implementation of this vulnerability involves the manipulation of QuickTime movie files to include specially crafted crgn atoms that exceed the allocated buffer space. This heap-based overflow occurs when the application attempts to copy data from the malicious atom into a fixed-size buffer without proper validation of the source data length. The flaw is particularly dangerous because it can be triggered through the normal playback of movie files, making it an attractive target for remote exploitation. Attackers can craft movie files that, when opened by vulnerable QuickTime versions, cause the application to overwrite adjacent memory locations, potentially allowing for arbitrary code execution with the privileges of the user running the application.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with a means to compromise systems running vulnerable QuickTime versions without requiring any special privileges or user interaction beyond opening the malicious file. The vulnerability affects a wide range of Apple operating systems including Mac OS X versions that ship with vulnerable QuickTime components, making it particularly concerning for enterprise environments where QuickTime is commonly used for multimedia content. The remote attack vector means that the vulnerability can be exploited through email attachments, web downloads, or any other method of delivering malicious QuickTime movie files to target systems.
This vulnerability maps to CWE-121 heap-based buffer overflow and aligns with ATT&CK technique T1203 for exploitation of software vulnerabilities. The attack pattern typically involves crafting a malicious movie file that triggers the buffer overflow during normal QuickTime processing, potentially leading to privilege escalation and persistent access. Organizations should prioritize patching affected systems and implementing network segmentation to prevent exploitation. Mitigation strategies include disabling QuickTime support in web browsers, implementing file type restrictions, and monitoring for suspicious QuickTime file access patterns. The vulnerability highlights the importance of proper input validation in multimedia processing libraries and demonstrates how seemingly benign file format parsing can become a critical security risk when proper bounds checking is omitted.
The remediation process requires immediate deployment of Apple's security update 7.4.5 or later versions, which address the buffer overflow by implementing proper bounds checking for crgn atom data processing. System administrators should also consider implementing application whitelisting policies to restrict execution of unauthorized QuickTime components and conduct thorough vulnerability assessments to identify any remaining systems running vulnerable versions. Additionally, users should be educated about the risks of opening untrusted movie files and the importance of keeping multimedia software updated. The incident underscores the need for continuous security testing of multimedia processing components and the implementation of memory-safe programming practices to prevent similar vulnerabilities in future software releases.