CVE-2007-0429 in DivX Player
Summary
by MITRE
DivXBrowserPlugin (aka DivX Web Player) npdivx32.dll, as distributed with DivX Player 6.4.1, allows remote attackers to cause a denial of service (Internet Explorer 7 crash) by invoking the GoWindowed method for a certain instance of the ActiveX object.
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Analysis
by VulDB Data Team • 08/18/2024
The vulnerability identified as CVE-2007-0429 affects the DivXBrowserPlugin component known as npdivx32.dll which was distributed with DivX Player version 6.4.1. This plugin represents a critical security flaw within the browser integration capabilities of the DivX media player software, specifically targeting Internet Explorer 7 users who have the plugin installed. The issue manifests through the improper handling of ActiveX object methods within the browser environment, creating a pathway for remote exploitation that can lead to system instability and service disruption.
The technical flaw resides in the GoWindowed method implementation within the npdivx32.dll ActiveX control. When a malicious web page invokes this specific method on a DivX ActiveX object instance, the plugin fails to properly validate input parameters or handle the method execution within the constrained environment of Internet Explorer 7. This improper method handling causes a memory corruption condition or stack overflow that results in the browser process crashing and terminating unexpectedly. The vulnerability specifically targets the interaction between the browser plugin and the host application, exploiting the trust relationship that exists between ActiveX controls and Internet Explorer's execution environment.
The operational impact of this vulnerability extends beyond simple denial of service, as it represents a potential vector for more sophisticated attacks within the context of web-based exploitation. Attackers can craft malicious web pages that automatically trigger the vulnerable GoWindowed method when users visit compromised websites, leading to unexpected browser crashes that disrupt user experience and potentially provide opportunities for further exploitation. This vulnerability affects users who have the DivX Player 6.4.1 installed and have not patched their systems, creating a significant risk for anyone browsing the internet with this specific plugin configuration. The issue demonstrates the inherent security risks associated with ActiveX controls and their integration with web browsers, particularly in older versions of Internet Explorer that lacked robust security mitigations.
Organizations and users should immediately disable or remove the vulnerable DivXBrowserPlugin component from their systems to prevent exploitation. The recommended mitigation strategy includes uninstalling the affected DivX Player version 6.4.1 and installing the latest available version that contains security patches. Additionally, browser security settings should be configured to restrict ActiveX control execution or implement enhanced security zones that limit plugin interactions with untrusted websites. From a security framework perspective, this vulnerability aligns with CWE-121 and CWE-122 categories related to buffer overflow conditions and improper input validation. The attack pattern follows the ATT&CK technique T1203 - Exploitation for Client Execution, where adversaries leverage browser plugins to execute malicious code and compromise system integrity. Regular security updates and patch management processes should be enforced to prevent similar vulnerabilities from being exploited in other browser plugins or media players.