CVE-2009-2566 in MMPlayer
Summary
by MITRE
Stack-based buffer overflow in TFM MMPlayer 2.0, and possibly 2.0.0.30, allows remote attackers to execute arbitrary code via a long string in a playlist (.m3u) file.
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Analysis
by VulDB Data Team • 12/02/2024
The vulnerability identified as CVE-2009-2566 represents a critical stack-based buffer overflow flaw in TFM MMPlayer version 2.0 and potentially 2.0.0.30. This security weakness resides within the media player's handling of playlist files, specifically when processing .m3u format files that contain excessively long string data. The flaw occurs during the parsing of playlist entries where the application fails to properly validate input lengths before copying data onto the stack, creating an exploitable condition that can be leveraged by remote attackers to gain control over the affected system.
The technical implementation of this vulnerability follows a classic stack buffer overflow pattern where insufficient bounds checking allows an attacker to overwrite adjacent memory locations on the program's stack. When a maliciously crafted .m3u playlist file is loaded into the vulnerable MMPlayer application, the excessive string data causes the buffer to overflow beyond its allocated memory boundaries. This overflow can overwrite the return address of the calling function, allowing an attacker to redirect execution flow to malicious code injected into the stack. The vulnerability is particularly dangerous because it can be triggered remotely through the delivery of a specially crafted playlist file, making it an attractive target for remote code execution attacks.
The operational impact of this vulnerability extends beyond simple privilege escalation as it provides attackers with full control over the affected system. An attacker who successfully exploits this vulnerability can execute arbitrary code with the privileges of the MMPlayer process, which typically runs with user-level privileges but could potentially be elevated if the application is running with administrative rights. The remote execution capability means that attackers do not need physical access to the target system, making this vulnerability particularly concerning for networked environments where media players are commonly used to process user-generated content from untrusted sources.
This vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and represents a direct violation of secure coding practices regarding input validation and memory management. The attack vector follows patterns consistent with the ATT&CK framework's T1203 technique for "Exploitation for Client Execution" where adversaries leverage vulnerabilities in software to execute malicious code on target systems. The exploitation requires minimal prerequisites beyond the ability to deliver a malicious playlist file, making it accessible to threat actors with moderate technical skills. Organizations using TFM MMPlayer should consider implementing network segmentation and access controls to limit exposure, while also ensuring that all software components are regularly updated to address known vulnerabilities and prevent exploitation attempts.
The remediation approach for this vulnerability involves immediate patching of the affected MMPlayer versions, with the vendor releasing updated builds that include proper input validation and bounds checking mechanisms. Additionally, users should be educated about the dangers of opening playlist files from untrusted sources, and security policies should be established to prevent automatic execution of potentially malicious media files. Network administrators should also consider implementing content filtering solutions that can detect and block suspicious playlist file content, while monitoring for unusual network activity that might indicate exploitation attempts.