CVE-2007-1162 in BrowseDialog Server
Summary
by MITRE
A certain ActiveX control in the Common Controls Replacement Project (CCRP) CCRP BrowseDialog Server (ccrpbds6.dll) allows remote attackers to cause a denial of service (Internet Explorer 7 crash) via a long (1) IsFolderAvailable or (2) RootFolder property value, different vectors than CVE-2007-0371.
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Analysis
by VulDB Data Team • 08/24/2024
The vulnerability described in CVE-2007-1162 represents a critical denial of service flaw within the Common Controls Replacement Project's CCRP BrowseDialog Server component. This ActiveX control, specifically the ccrpbds6.dll file, operates within Internet Explorer 7 environments and presents a security risk through improper input validation mechanisms. The flaw manifests when remote attackers exploit the control's handling of property values, particularly targeting the IsFolderAvailable and RootFolder properties that govern folder browsing functionality. The vulnerability stems from the absence of adequate boundary checks and input sanitization within the ActiveX control's implementation, creating a condition where maliciously crafted property values can trigger system instability.
The technical exploitation of this vulnerability occurs through the manipulation of specific property values within the ActiveX control interface. When attackers provide excessively long string values to either the IsFolderAvailable or RootFolder properties, the control fails to properly handle these inputs, resulting in memory corruption or stack overflow conditions. This improper handling leads to Internet Explorer 7 crashing and terminating the browsing session, effectively disrupting user productivity and potentially providing a vector for more sophisticated attacks. The vulnerability operates at the application layer of the network stack and requires user interaction through the exploitation of ActiveX controls within web browsers, making it particularly concerning for enterprise environments where browser-based attacks are common.
From an operational perspective, this vulnerability presents significant risks to organizations relying on Internet Explorer 7 for business operations. The denial of service impact directly affects user productivity and can potentially be leveraged as a stepping stone for further attacks. The vulnerability's characteristics align with CWE-121, which addresses stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflow scenarios. Security professionals should note that this vulnerability represents a classic example of insufficient input validation in client-side components, where the lack of proper boundary checking allows malicious inputs to corrupt application memory structures. The attack vector through ActiveX controls demonstrates the ongoing risks associated with browser plugin and control technologies that were prevalent during this era of computing.
Organizations should implement immediate mitigations including disabling ActiveX controls in Internet Explorer 7 environments or applying the appropriate security patches from Microsoft. The recommended approach involves either blocking the ccrpbds6.dll component through group policy settings or upgrading to newer versions of Internet Explorer that address these vulnerabilities. Additionally, network-based solutions such as web application firewalls should be configured to filter out suspicious ActiveX control interactions. Security teams should consider implementing monitoring solutions that detect anomalous property value patterns in ActiveX controls, as this can serve as an early warning system for potential exploitation attempts. The vulnerability also highlights the importance of maintaining up-to-date security patches and implementing comprehensive vulnerability management programs that address both known and emerging threats in browser environments. This specific flaw demonstrates the broader ATT&CK framework concept of privilege escalation through application vulnerabilities, where attackers leverage seemingly minor flaws to gain control over user sessions and potentially escalate to more significant system compromises.