CVE-2003-0427 in mikmod
Summary
by MITRE
Buffer overflow in mikmod 3.1.6 and earlier allows remote attackers to execute arbitrary code via an archive file that contains a file with a long filename.
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Analysis
by VulDB Data Team • 08/13/2025
The vulnerability identified as CVE-2003-0427 represents a critical buffer overflow flaw within mikmod version 3.1.6 and earlier implementations. This issue specifically manifests when the software processes archive files containing files with excessively long filenames, creating a condition where memory boundaries are exceeded during the parsing operation. The flaw resides in the filename handling mechanism of the mikmod library, which is commonly used for playing various audio formats including mod, s3m, and xm files. When an attacker crafts a malicious archive file with an overlong filename, the software fails to properly validate the input length, leading to a buffer overflow condition that can be exploited to execute arbitrary code on the target system.
The technical nature of this vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations. This particular implementation flaw demonstrates how improper input validation can create exploitable conditions in multimedia processing libraries. The vulnerability operates through a classic stack-based buffer overflow scenario where the software allocates a fixed-size buffer for filename storage but does not verify that incoming filenames exceed this predetermined limit. This weakness can be leveraged by attackers to overwrite return addresses, function pointers, or other critical memory structures within the application's execution context.
From an operational perspective, this vulnerability presents significant risk to systems that utilize mikmod for audio playback or processing, particularly in environments where untrusted archive files might be processed automatically. The remote exploitation capability means that attackers can craft malicious archive files and distribute them through various channels such as email attachments, file sharing services, or web downloads. When a victim's system processes these files through an application that relies on mikmod, the buffer overflow can be triggered to gain arbitrary code execution privileges. This type of vulnerability is particularly dangerous in server environments where automated processing of user-uploaded content occurs, as it can lead to complete system compromise and unauthorized access to sensitive data.
The impact of this vulnerability extends beyond immediate code execution capabilities to encompass broader security implications within software ecosystems that depend on mikmod. Organizations relying on this library for audio processing must consider the potential for privilege escalation and persistent access through exploitation of this buffer overflow. The vulnerability also highlights the importance of input validation in multimedia processing libraries, as similar issues could potentially exist in other components of the same software stack. Mitigation strategies should include immediate patching of affected mikmod versions, implementation of input length validation for archive file processing, and deployment of network segmentation to limit exposure of vulnerable systems. Additionally, organizations should consider implementing application whitelisting policies and monitoring for unusual file processing activities that might indicate exploitation attempts. The vulnerability serves as a reminder of the critical need for robust memory management practices in software development, particularly for libraries that handle untrusted input data.