CVE-2007-5601 in RealPlayer
Summary
by MITRE
Stack-based buffer overflow in the Database Component in MPAMedia.dll in RealNetworks RealPlayer 10.5 and 11 beta, and earlier versions including 10, RealOne Player, and RealOne Player 2, allows remote attackers to execute arbitrary code via certain playlist names, as demonstrated via the import method to the IERPCtl ActiveX control in ierpplug.dll.
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Analysis
by VulDB Data Team • 06/02/2025
The vulnerability identified as CVE-2007-5601 represents a critical stack-based buffer overflow within the database component of RealNetworks RealPlayer software ecosystem. This flaw exists in MPAMedia.dll and affects multiple versions including RealPlayer 10.5, 11 beta, and earlier releases, as well as RealOne Player and RealOne Player 2. The vulnerability specifically manifests when processing certain playlist names through the import method of the IERPCtl ActiveX control located in ierpplug.dll. This architectural weakness creates a pathway for remote code execution attacks that can be triggered without user interaction, making it particularly dangerous in networked environments where users might unknowingly encounter maliciously crafted playlist files.
The technical nature of this vulnerability stems from improper bounds checking within the database component of the media player. When the software processes playlist files containing specially crafted names, the MPAMedia.dll module fails to validate the length of input data before copying it into a fixed-size stack buffer. This classic buffer overflow condition allows an attacker to overwrite adjacent memory locations, potentially including return addresses and function pointers, thereby enabling arbitrary code execution. The vulnerability is categorized under CWE-121 Stack-based Buffer Overflow, which is a fundamental software security weakness that has been consistently identified as one of the most prevalent causes of exploitable conditions in application code. The attack vector is particularly insidious because it leverages ActiveX controls, which are commonly enabled in Internet Explorer environments, allowing remote exploitation through web-based delivery mechanisms.
The operational impact of CVE-2007-5601 extends beyond simple code execution to encompass complete system compromise in vulnerable environments. Attackers can leverage this vulnerability to install malicious software, modify system configurations, access sensitive data, or establish persistent backdoors within affected systems. The vulnerability affects a wide range of RealNetworks products that were widely distributed, making the potential attack surface substantial. The fact that this flaw exists in both RealPlayer and RealOne Player versions indicates a systemic issue within the software architecture that was not properly addressed in the affected codebase. According to ATT&CK framework, this vulnerability maps to T1059 Command and Scripting Interpreter and T1068 Exploitation for Privilege Escalation, as successful exploitation typically requires elevation of privileges to execute malicious payloads effectively. The remote nature of the attack means that users do not need to interact with malicious content directly, as the vulnerability can be triggered through web browsing or automatic playlist loading mechanisms.
Mitigation strategies for CVE-2007-5601 primarily focus on immediate software updates and security configuration adjustments. Organizations should prioritize patching all affected versions of RealPlayer and RealOne Player to the latest available security updates from RealNetworks, as these releases contain fixes for the identified buffer overflow conditions. System administrators should implement ActiveX control restrictions within Internet Explorer configurations, disabling potentially dangerous ActiveX controls or requiring explicit user approval before loading them. Network-level protections can include implementing web application firewalls that monitor for suspicious playlist file patterns or blocking access to known malicious domains that might deliver exploit payloads. Additionally, security awareness training for end users should emphasize the importance of avoiding untrusted playlist files and maintaining updated software versions. The vulnerability serves as a reminder of the critical importance of input validation and memory safety practices in software development, particularly for applications handling user-supplied data in multimedia environments where the attack surface can be significantly expanded through various file format parsing mechanisms.