CVE-2009-0491 in Elecard MPEG Player
Summary
by MITRE
Stack-based buffer overflow in Elecard MPEG Player 5.5 build 15884.081218 allows remote attackers to execute arbitrary code via a M3U file containing a long URL.
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Analysis
by VulDB Data Team • 11/21/2024
The vulnerability identified as CVE-2009-0491 represents a critical stack-based buffer overflow flaw within Elecard MPEG Player version 5.5 build 15884.081218. This issue manifests when the media player processes specially crafted M3U playlist files containing excessively long URLs that exceed the allocated buffer space on the stack. The flaw stems from inadequate input validation and bounds checking mechanisms within the player's handling of playlist data structures, creating a predictable exploitation vector for remote attackers.
The technical implementation of this vulnerability involves the player's failure to properly validate the length of URL strings within M3U files before copying them into fixed-size stack buffers. When a maliciously constructed M3U file containing an overly long URL is processed, the buffer overflow occurs during the string copy operation, potentially overwriting adjacent stack memory including return addresses and control data. This allows attackers to manipulate the program execution flow and inject arbitrary code into the running process, effectively achieving remote code execution capabilities. The vulnerability operates under the CWE-121 stack-based buffer overflow classification and aligns with ATT&CK technique T1059.007 for command and scripting interpreter.
The operational impact of this vulnerability extends beyond simple exploitation as it enables attackers to execute arbitrary code with the privileges of the user running the Elecard MPEG Player application. This creates a significant risk for users who may inadvertently open malicious M3U files from untrusted sources, particularly in environments where users have elevated privileges. The remote nature of the attack means that exploitation can occur without physical access to the target system, making it particularly dangerous for widespread deployment. Attackers can leverage this vulnerability to install malware, establish backdoors, or perform further reconnaissance activities within the compromised network.
Mitigation strategies for CVE-2009-0491 require immediate action including applying the vendor-provided security patches or upgrading to newer versions of Elecard MPEG Player that address the buffer overflow vulnerability. System administrators should implement network-based controls to block or scan M3U files from untrusted sources, while also considering application whitelisting policies that restrict execution of known vulnerable applications. Additional protective measures include deploying intrusion detection systems that monitor for suspicious URL patterns in playlist files and implementing user education programs to prevent accidental opening of malicious files. Organizations should also conduct vulnerability assessments to identify other potentially affected systems running the vulnerable software version and ensure proper patch management processes are in place to prevent similar issues in the future.