CVE-2002-0337 in RealPlayer
Summary
by MITRE
RealPlayer 8 allows remote attackers to cause a denial of service (CPU utilization) via malformed .mp3 files.
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Analysis
by VulDB Data Team • 10/23/2024
The vulnerability identified as CVE-2002-0337 represents a significant denial of service weakness in RealPlayer 8 software that has persisted as a critical security concern within media player applications. This flaw specifically targets the audio processing capabilities of the RealPlayer 8 client, creating a scenario where maliciously crafted media files can trigger excessive cpu utilization and system resource exhaustion. The vulnerability operates through the manipulation of mp3 file structures, exploiting parsing inconsistencies in how the software handles malformed audio data streams. This particular weakness demonstrates the inherent risks associated with multimedia processing applications that fail to implement proper input validation and resource management protocols.
The technical mechanism behind this vulnerability involves the exploitation of buffer overflow conditions and improper error handling within the mp3 decoding engine of RealPlayer 8. When the application encounters malformed mp3 files containing specially crafted data sequences, the parser fails to properly validate the file structure and subsequently enters into infinite loops or consumes excessive computational resources during the decoding process. This behavior directly maps to CWE-129, which describes improper validation of array indices, and CWE-131, which addresses improper handling of memory allocation failures. The flaw essentially creates a condition where legitimate audio processing operations become computationally expensive and resource-intensive, leading to system performance degradation and potential complete system unresponsiveness.
From an operational impact perspective, this vulnerability presents a substantial risk to users and organizations relying on RealPlayer 8 for media playback. Attackers can exploit this weakness by distributing malicious mp3 files through various channels including email attachments, web downloads, or peer-to-peer networks, making it particularly dangerous in environments where users frequently download content from untrusted sources. The sustained high cpu utilization can cause system instability, application crashes, and in severe cases, complete system lockups that require manual intervention or system restarts. This vulnerability particularly affects enterprise environments where multiple users might be simultaneously accessing shared media resources, amplifying the potential impact of a single compromised file. The attack vector aligns with ATT&CK technique T1499.004, which describes network denial of service attacks through resource exhaustion.
Mitigation strategies for CVE-2002-0337 primarily focus on immediate software updates and implementation of defensive measures. The most effective approach involves upgrading to RealPlayer versions that have patched the underlying parsing vulnerabilities and implemented proper input validation mechanisms. Organizations should also consider implementing network-based filtering solutions that can identify and block suspicious mp3 file patterns before they reach end-user systems. Additionally, user education regarding the dangers of downloading media files from untrusted sources remains crucial in preventing exploitation of this vulnerability. System administrators should monitor cpu utilization patterns and implement automated alerts when abnormal resource consumption patterns are detected. The remediation efforts should also include regular security assessments of multimedia applications and the establishment of secure software procurement processes that prioritize vendors with strong security track records. This vulnerability serves as a reminder of the importance of robust input validation and resource management in multimedia processing applications, particularly those handling user-provided content.