CVE-2012-3890 in WinAmp
Summary
by MITRE
The in_mod plugin in Winamp before 5.63 allows remote attackers to cause a denial of service (heap memory corruption) or possibly have unspecified other impact via a .IT file.
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Analysis
by VulDB Data Team • 12/06/2021
The vulnerability identified as CVE-2012-3890 affects the in_mod plugin within Winamp media player versions prior to 5.63, representing a critical heap memory corruption issue that can be exploited remotely through maliciously crafted .IT files. This vulnerability resides in the plugin's handling of Impulse Tracker module files, which are commonly used music formats in the demoscene and retro gaming communities. The flaw manifests when the in_mod plugin processes specially constructed .IT files, leading to improper memory management that can result in heap corruption and subsequent system instability.
The technical nature of this vulnerability aligns with CWE-122, which describes heap-based buffer overflow conditions that occur when a program writes data beyond the boundaries of heap-allocated memory blocks. The in_mod plugin fails to properly validate or sanitize the structure and content of .IT files before processing them, allowing attackers to craft malformed files that trigger memory corruption during parsing operations. This type of vulnerability falls under the broader category of memory safety issues that have been extensively documented in the cybersecurity community and represent one of the most common attack vectors for remote code execution and denial of service conditions.
The operational impact of this vulnerability extends beyond simple denial of service, as the heap corruption can potentially lead to arbitrary code execution or system crashes that affect the entire multimedia playback environment. Attackers can leverage this vulnerability by distributing malicious .IT files through various vectors including email attachments, compromised websites, or peer-to-peer networks where Winamp users might encounter and open these files. The remote exploitation capability means that users do not need to be present during the attack, as simply opening the affected file can trigger the vulnerability. This makes the vulnerability particularly dangerous in environments where automatic playback or file association is enabled, as the attack can be executed without user interaction beyond the initial file opening.
From a threat modeling perspective, this vulnerability maps to several ATT&CK techniques including T1203 (Exploitation for Execution) and T1059 (Command and Scripting Interpreter) when considering the potential for code execution, and T1499 (Endpoint Denial of Service) for the denial of service impact. The vulnerability demonstrates the importance of input validation and proper memory management in multimedia processing libraries, as similar issues have been observed in other media player implementations and audio processing frameworks. Organizations and individuals using Winamp versions prior to 5.63 should immediately implement mitigations including updating to the patched version, disabling the in_mod plugin if not required, or implementing network-based filtering to prevent .IT file execution. Additionally, system administrators should consider implementing application whitelisting policies that restrict the execution of untrusted multimedia files, particularly in enterprise environments where the attack surface is larger and the potential impact more significant.