CVE-2002-0284 in WinAmp
Summary
by MITRE
Winamp 2.78 and 2.77, when opening a wma file that requires a license, sends the full path of the Temporary Internet Files directory to the web page that is processing the license, which could allow malicious web servers to obtain the pathname.
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Analysis
by VulDB Data Team • 06/07/2018
This vulnerability exists in winamp versions 2.77 and 2.78 where the application fails to properly sanitize file paths when processing wma files that require licensing. When a user opens such a media file, winamp automatically communicates with web servers to obtain necessary licensing information. During this process, the software inadvertently exposes the complete file path to the temporary internet files directory, which contains sensitive information about the user's system configuration and file storage locations.
The technical flaw stems from improper input validation and output sanitization within winamp's media file processing pipeline. When handling wma files that require license verification, the application constructs a request to remote servers that includes the full path to the temporary internet files directory. This occurs without any form of path sanitization or obfuscation, creating an information disclosure vulnerability that violates secure coding practices and principles of least privilege. The vulnerability specifically relates to CWE-200, which addresses improper exposure of sensitive information, and represents a classic example of how applications can unintentionally leak system information through network communications.
The operational impact of this vulnerability extends beyond simple information disclosure, as the leaked path information can be exploited by malicious actors to gain insights into the target system's file structure and user behavior patterns. Attackers can use this information to plan more sophisticated attacks, including directory traversal attempts, privilege escalation exploits, or targeted malware delivery. The exposure of the temporary internet files directory path particularly concerns security professionals because it often contains cached web content, cookies, and other sensitive user data that could be leveraged in further attacks. This vulnerability aligns with ATT&CK technique T1083, which covers directory and file discovery, and demonstrates how seemingly benign application functionality can create security exposure.
Mitigation strategies for this vulnerability include immediate patching of affected winamp versions to prevent the automatic path disclosure, implementing network monitoring to detect unusual path information being transmitted, and configuring firewall rules to restrict outbound communications from winamp to external servers. System administrators should also consider implementing application whitelisting policies that prevent unauthorized network communications from media players and ensure that temporary internet files directories are properly secured with appropriate access controls. Organizations should conduct regular security assessments of media applications to identify similar path disclosure vulnerabilities and ensure that all software components properly validate and sanitize all user inputs and system paths before transmitting them to external systems.