CVE-2009-2798 in QuickTime
Summary
by MITRE
Heap-based buffer overflow in Apple QuickTime before 7.6.4 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted FlashPix file.
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Analysis
by VulDB Data Team • 08/22/2021
The vulnerability identified as CVE-2009-2798 represents a critical heap-based buffer overflow in Apple QuickTime software versions prior to 7.6.4. This flaw resides within the handling of FlashPix image files, which are a specific format used for high-resolution photography and scientific imaging applications. The vulnerability manifests when QuickTime processes maliciously crafted FlashPix files, creating a condition where an attacker can manipulate memory allocation patterns in the application's heap memory space. The flaw specifically affects the parsing logic that interprets metadata and image data within these specialized file formats, allowing for potential memory corruption that could be exploited for remote code execution.
The technical implementation of this vulnerability stems from inadequate bounds checking during the parsing of FlashPix file structures. When QuickTime encounters a malformed FlashPix file, the application fails to properly validate the size parameters and data offsets within the file's metadata sections. This leads to a situation where a crafted input can cause the heap allocator to write data beyond the allocated buffer boundaries, resulting in memory corruption. The vulnerability is classified under CWE-121 as a heap-based buffer overflow, which is particularly dangerous because it can be exploited to overwrite critical memory structures including return addresses and function pointers. Attackers can leverage this weakness to inject and execute arbitrary code with the privileges of the affected application, potentially leading to complete system compromise.
The operational impact of this vulnerability extends beyond simple denial of service conditions to encompass full remote code execution capabilities. An attacker can craft a malicious FlashPix file that, when opened by an affected QuickTime version, will trigger the buffer overflow and provide a means for remote code execution. This makes the vulnerability particularly dangerous in environments where users might encounter untrusted content through email attachments, web downloads, or malicious websites. The application crash resulting from this vulnerability can be used as a vector for more sophisticated attacks, including privilege escalation and persistent backdoor installation. According to ATT&CK framework methodology, this vulnerability maps to T1059 for command and scripting interpreter and T1203 for Exploitation for Client Execution, as it enables attackers to execute malicious code through compromised applications.
Mitigation strategies for CVE-2009-2798 primarily focus on immediate software updates and system hardening measures. Apple released QuickTime 7.6.4 to address this vulnerability, which included enhanced bounds checking and improved input validation for FlashPix file processing. Organizations should implement immediate patch management protocols to ensure all systems running affected QuickTime versions are updated. Additional protective measures include restricting user permissions when opening multimedia files, implementing content filtering solutions that can detect and block malicious FlashPix files, and deploying application whitelisting policies that prevent execution of untrusted code. Network-level protections such as intrusion detection systems can also be configured to monitor for suspicious file transfer patterns and malformed FlashPix file content. Security professionals should also consider implementing sandboxing techniques for multimedia applications to limit the potential impact of successful exploitation attempts, as recommended by industry best practices for mitigating heap-based buffer overflow vulnerabilities.