CVE-2009-1351 in Apollo
Summary
by MITRE
Heap-based buffer overflow in Apollo 37zz allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a long URI in a playlist (.m3u) file.
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Analysis
by VulDB Data Team • 11/27/2024
The vulnerability identified as CVE-2009-1351 represents a critical heap-based buffer overflow in the Apollo 37zz media player software, which exposes a fundamental flaw in memory management and input validation practices. This vulnerability resides within the handling of playlist files, specifically those with the .m3u extension, where the application fails to properly validate the length of Uniform Resource Identifiers contained within the playlist structure. The flaw occurs when the software attempts to process a maliciously crafted URI that exceeds the allocated buffer size, leading to memory corruption that can be exploited by remote attackers. The vulnerability is classified under CWE-121 as a stack-based buffer overflow, though the specific implementation in this case involves heap memory allocation, making it particularly dangerous as heap corruption can lead to more unpredictable behavior and exploitation vectors.
The operational impact of this vulnerability extends beyond simple denial of service to potentially enable remote code execution, making it a severe security concern for any system utilizing the affected software. When a remote attacker crafts a malicious playlist file containing an excessively long URI, the Apollo 37zz application crashes upon attempting to parse the malformed input, resulting in a denial of service condition that can be leveraged to disrupt legitimate service availability. However, the more concerning aspect is the potential for arbitrary code execution, which would allow an attacker to gain control over the affected system. This vulnerability directly maps to ATT&CK technique T1203, which involves legitimate user execution of malicious code, and T1059, which covers command and scripting interpreter usage, as the successful exploitation would likely involve executing malicious payloads through the compromised application environment.
The technical exploitation of this vulnerability requires an attacker to construct a specially crafted .m3u playlist file containing a URI that exceeds the buffer boundaries allocated by the Apollo 37zz application. The heap-based nature of the overflow means that memory corruption occurs in the heap region rather than on the stack, which can make exploitation more complex but also potentially more reliable in certain scenarios. The application's failure to implement proper bounds checking on URI length validation creates a pathway for attackers to overwrite adjacent memory locations, potentially including return addresses or function pointers, which could be manipulated to redirect program execution flow. This type of vulnerability demonstrates poor input sanitization practices and highlights the importance of implementing robust memory management controls and defensive programming techniques throughout the software development lifecycle.
Mitigation strategies for this vulnerability should focus on immediate patching of the affected software version, as well as implementing additional defensive measures to prevent exploitation attempts. System administrators should disable or restrict the processing of external playlist files when possible, and implement strict file validation mechanisms that can detect and reject malformed playlist content. Network-level protections such as intrusion prevention systems can be configured to block traffic containing suspicious playlist file patterns, while endpoint protection solutions should be updated to recognize and prevent execution of malicious playlist files. The vulnerability underscores the necessity of following secure coding practices including input validation, bounds checking, and proper memory management, as outlined in industry standards such as the OWASP Secure Coding Practices and the CERT Secure Coding Standards. Organizations should also consider implementing network segmentation and access controls to limit exposure of vulnerable systems and reduce the attack surface available to potential adversaries.