CVE-2009-1330 in Easy RM to MP3 Converter
Summary
by MITRE
Stack-based buffer overflow in Easy RM to MP3 Converter allows remote attackers to execute arbitrary code via a long filename in a playlist (.pls) file.
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Analysis
by VulDB Data Team • 04/18/2025
The vulnerability identified as CVE-2009-1330 represents a critical stack-based buffer overflow flaw within the Easy RM to MP3 Converter software, a widely used media conversion tool that enabled users to transform various audio formats including RealMedia files into MP3 format. This vulnerability resides in the software's handling of playlist files with the .pls extension, which are commonly used to store lists of audio files for streaming or playback purposes. The flaw specifically manifests when the application processes playlist files containing excessively long filenames, creating a condition where attacker-controlled data exceeds the allocated buffer space on the stack, thereby enabling potential code execution.
The technical mechanism behind this vulnerability stems from improper input validation and bounds checking within the playlist file parser component of the Easy RM to MP3 Converter. When the application encounters a .pls file containing a filename that exceeds the predefined buffer size, the overflow occurs during the string copy or concatenation operations, causing adjacent memory locations to be overwritten. This type of buffer overflow vulnerability is classified under CWE-121 as a stack-based buffer overflow, where the corrupted stack memory can be manipulated to redirect program execution flow. The attack vector is particularly concerning as it allows remote code execution through network-based delivery of malicious playlist files, making it exploitable without requiring local system access.
The operational impact of this vulnerability extends significantly beyond typical software exploitation scenarios, as it provides attackers with the capability to execute arbitrary code with the privileges of the user running the vulnerable application. This remote code execution capability means that attackers could potentially install malware, modify system configurations, access sensitive data, or establish persistent backdoors on compromised systems. The vulnerability affects systems where Easy RM to MP3 Converter is installed and actively processes playlist files, which could include home users, businesses, or organizations that utilize this converter for audio file management. The exploitability of this vulnerability is enhanced by the fact that many users may unknowingly download and execute malicious playlist files from untrusted sources, particularly in environments where users have the ability to process media files from external sources.
Mitigation strategies for CVE-2009-1330 should focus on immediate remediation through software updates from the vendor, as well as defensive measures to prevent exploitation. Organizations should implement strict file validation policies that prevent automatic execution of playlist files from untrusted sources, and consider disabling support for potentially dangerous file formats when possible. Network administrators should deploy intrusion detection systems that monitor for suspicious playlist file patterns and implement sandboxing techniques for media file processing. Additionally, users should be educated about the risks of executing playlist files from unknown sources, and system administrators should conduct regular vulnerability assessments to identify and remediate similar issues in other media processing applications. The vulnerability aligns with ATT&CK technique T1203 by leveraging a software vulnerability to execute malicious code, and represents a classic example of how media processing applications can become attack vectors for privilege escalation and persistent access.