CVE-2008-1886 in Download Client
Summary
by MITRE
The NeffyLauncher 1.0.5 ActiveX control (NeffyLauncher.dll) in CDNetworks Nefficient Download uses weak cryptography for a KeyCode that blocks unauthorized use of the control, which allows remote attackers to bypass this protection mechanism by calculating the required KeyCode. NOTE: this can be used by arbitrary web sites to host exploit code that targets this control.
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Analysis
by VulDB Data Team • 10/20/2024
The CVE-2008-1886 vulnerability resides within the NeffyLauncher 1.0.5 ActiveX control developed by CDNetworks for their Nefficient Download product. This control represents a significant security weakness in the realm of ActiveX-based software components that are commonly deployed in enterprise environments. The vulnerability specifically targets the cryptographic implementation used to generate and validate a KeyCode mechanism designed to prevent unauthorized usage of the control. The fundamental flaw lies in the use of weak cryptographic algorithms that fail to provide adequate protection against reverse engineering and exploitation attempts.
The technical implementation of this vulnerability stems from the inadequate cryptographic strength employed in the KeyCode generation process. When an ActiveX control implements weak cryptography, it typically relies on predictable or easily reversible algorithms that do not meet modern security standards. This weakness allows attackers to perform mathematical analysis or brute force operations to determine the correct KeyCode value required to bypass the protection mechanism. The vulnerability is particularly concerning because it affects a component that is designed to be executed within web browsers, making it accessible to remote attackers who can craft malicious web pages to exploit the control.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass a broader range of security implications for systems running vulnerable versions of the NeffyLauncher control. Attackers can leverage this weakness to execute arbitrary code on targeted systems by hosting malicious web content that automatically loads and exploits the vulnerable ActiveX control. This creates a dangerous attack surface where users visiting compromised websites can unknowingly execute malicious payloads without proper authentication or authorization. The vulnerability essentially transforms a legitimate software component into a potential vector for remote code execution and system compromise.
The security implications of CVE-2008-1886 align with several established vulnerability classifications including CWE-327, which addresses the use of weak cryptographic algorithms, and CWE-16, which covers issues in the design of security features. From an ATT&CK framework perspective, this vulnerability maps to techniques involving exploitation of known vulnerabilities and execution of malicious code through browser-based attack vectors. The attack surface is particularly dangerous because it allows for arbitrary code execution without requiring user interaction beyond visiting a malicious website, making it a prime candidate for drive-by download attacks.
Mitigation strategies for this vulnerability require immediate action to disable or remove the vulnerable ActiveX control from affected systems. Organizations should implement browser security policies that prevent automatic execution of ActiveX controls and consider deploying application whitelisting solutions to prevent unauthorized control loading. The most effective long-term solution involves upgrading to a newer version of the NeffyLauncher component that implements strong cryptographic algorithms for key generation and validation. Security administrators should also monitor for any instances of the vulnerable NeffyLauncher.dll file on systems and ensure that proper patch management procedures are followed to eliminate this security risk from enterprise environments.