CVE-2010-20123 in MyMP3Player
Summary
by MITRE • 08/22/2025
Steinberg MyMP3Player version 3.0 (build 3.0.0.67) is vulnerable to a stack-based buffer overflow when parsing .m3u playlist files. The application fails to properly validate the length of input data within the playlist, allowing a specially crafted file to overwrite critical memory structures and execute arbitrary code. This vulnerability can be exploited locally by convincing a user to open a malicious .m3u file.
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Analysis
by VulDB Data Team • 08/22/2025
The vulnerability identified as CVE-2010-20123 affects Steinberg MyMP3Player version 3.0 build 3.0.0.67 and represents a critical stack-based buffer overflow flaw that manifests when processing maliciously crafted .m3u playlist files. This type of vulnerability falls under the category of memory corruption vulnerabilities and is particularly dangerous because it can lead to complete system compromise when exploited successfully. The issue stems from inadequate input validation mechanisms within the application's playlist parsing functionality, where the software fails to properly enforce bounds checking on user-supplied data.
The technical implementation of this vulnerability occurs at the stack memory level where the application allocates a fixed-size buffer to store playlist data without sufficient validation of the input length. When a malicious .m3u file contains more data than the allocated buffer can accommodate, the excess data overflows into adjacent memory locations, potentially overwriting return addresses, function pointers, or other critical program structures. This overflow condition creates an opportunity for attackers to manipulate the program execution flow and inject malicious code that executes with the privileges of the affected application. The vulnerability is classified as a classic stack buffer overflow under CWE-121, which specifically addresses stack-based buffer overflow conditions where insufficient bounds checking allows data to overwrite adjacent stack memory.
The operational impact of this vulnerability extends beyond simple local code execution to potentially enable privilege escalation and system compromise. Since the exploit requires only convincing a user to open a malicious playlist file, it represents a low-barrier attack vector that can be delivered through social engineering or compromised download sources. The attack surface is particularly concerning because it operates within the context of media player applications that are frequently used and often run with elevated privileges. According to ATT&CK framework, this vulnerability maps to T1059.007 for command and script interpreter execution and T1068 for local privilege escalation, as successful exploitation could allow attackers to gain higher system privileges.
Mitigation strategies for CVE-2010-20123 should focus on both immediate defensive measures and long-term architectural improvements. Immediate remediation involves updating to a patched version of Steinberg MyMP3Player or implementing input validation measures that prevent oversized playlist entries from being processed. Organizations should also deploy application whitelisting solutions to restrict execution of untrusted playlist files and implement network-based controls to block potentially malicious content. The vulnerability demonstrates the importance of proper input validation and bounds checking in preventing memory corruption exploits, which aligns with security best practices outlined in secure coding guidelines. Additionally, regular security assessments and penetration testing should be conducted to identify similar buffer overflow conditions in legacy applications that may not have received proper security updates.