CVE-2007-4735 in Virtual DJ
Summary
by MITRE
Buffer overflow in Next Generation Software Virtual DJ (VDJ) 5.0 allows user-assisted remote attackers to execute arbitrary code via a long file path in an m3u file.
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Analysis
by VulDB Data Team • 10/04/2024
The vulnerability identified as CVE-2007-4735 represents a critical buffer overflow flaw within Next Generation Software Virtual DJ version 5.0 that exposes the application to remote code execution attacks. This security weakness specifically manifests when the software processes m3u playlist files containing excessively long file paths, creating a condition where attacker-controlled input can overwrite adjacent memory locations in the application's memory space. The vulnerability operates under the Common Weakness Enumeration framework as CWE-121, which categorizes buffer overflow conditions where insufficient bounds checking allows memory corruption through improper handling of input data. The flaw exists in the playlist parsing functionality of Virtual DJ, which fails to validate the length of file paths contained within m3u format files before attempting to process them.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as it enables user-assisted remote code execution attacks that can compromise entire systems running vulnerable versions of Virtual DJ. Attackers can craft malicious m3u files with extraordinarily long file paths that, when opened by an unsuspecting user, trigger the buffer overflow condition and potentially allow arbitrary code execution with the privileges of the affected user. This attack vector is particularly dangerous in environments where users frequently open playlist files from untrusted sources, such as peer-to-peer networks or public sharing platforms where m3u files are commonly distributed. The vulnerability requires minimal user interaction to exploit, making it a significant concern for both individual users and enterprise environments that may have Virtual DJ installed on workstations or servers.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1059.007 which covers command and scripting interpreter execution through scriptlets, and T1203 which addresses exploitation for execution through malicious file formats. The attack chain typically involves an attacker creating a specially crafted m3u file with a buffer overflow payload, distributing it through various channels, and waiting for a victim to open the playlist file, which then triggers the memory corruption and code execution. The vulnerability affects the application's memory management and input validation mechanisms, specifically targeting the handling of file path strings within the playlist processing subsystem. Organizations should consider this vulnerability as part of a broader attack surface assessment, particularly in environments where media playback applications are frequently used with untrusted content.
Mitigation strategies for CVE-2007-4735 primarily focus on immediate software updates and operational controls to prevent exploitation. The most effective remediation involves upgrading to a patched version of Virtual DJ that implements proper bounds checking for file path lengths within m3u files, typically through enhanced input validation and memory management practices. System administrators should implement strict file access controls and sandboxing measures to limit the potential impact of successful exploitation attempts. Network-based defenses such as content filtering and email scanning can help prevent malicious m3u files from reaching end users, while endpoint protection solutions should be configured to monitor for suspicious file handling patterns. Organizations should also consider implementing application whitelisting policies that restrict execution of untrusted playlist files, and establish security awareness training to educate users about the risks of opening playlist files from unknown sources. Additionally, regular vulnerability assessments and penetration testing should be conducted to identify similar buffer overflow conditions in other media processing applications within the organization's environment.