CVE-2010-1911 in Dynamic Agent
Summary
by MITRE
The site-locking implementation in the SdcWebSecureBase interface in tgctlcm.dll in Consona Live Assistance, Dynamic Agent, and Subscriber Assistance relies on a list of server domain names to restrict execution of ActiveX controls, which makes it easier for man-in-the-middle attackers to execute arbitrary code via a DNS hijacking attack.
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Analysis
by VulDB Data Team • 12/29/2024
The vulnerability described in CVE-2010-1911 represents a critical security flaw in the Consona Live Assistance software suite, specifically within the SdcWebSecureBase interface implementation in the tgctlcm.dll component. This issue stems from an insufficient site-locking mechanism that fails to properly validate the authenticity of server domain names, creating a fundamental weakness in the software's security architecture. The implementation relies on a static list of domain names to control ActiveX control execution, which fundamentally undermines the security model designed to prevent unauthorized code execution in client environments. This approach creates an attack surface where malicious actors can exploit the trust relationship between the client software and server domains to bypass security controls.
The technical flaw manifests through a DNS hijacking attack vector that allows adversaries to manipulate domain name resolution processes and redirect traffic to malicious servers. The vulnerability operates by exploiting the trust relationship between the client software and the hardcoded domain list, which serves as the sole mechanism for validating server authenticity. When an attacker successfully hijacks DNS resolution for one of the listed domains, they can execute arbitrary code on the target system through the compromised ActiveX control execution path. This represents a classic case of insufficient input validation and trust model implementation, where the security boundary relies on network-level controls rather than cryptographic verification or more robust authentication mechanisms.
The operational impact of this vulnerability extends beyond simple code execution, as it enables attackers to gain unauthorized access to systems running the affected software. The implications are particularly severe given that ActiveX controls typically operate with elevated privileges and can interact directly with system resources, file systems, and network components. Attackers can leverage this vulnerability to install malware, steal sensitive information, or establish persistent access to compromised systems. The vulnerability affects multiple products within the Consona Live Assistance suite, including Dynamic Agent and Subscriber Assistance, which increases the potential attack surface and makes the exploitation more likely in enterprise environments where these tools are commonly deployed. This vulnerability directly maps to CWE-284, which addresses improper access control, and represents a significant weakness in the software's security architecture.
Mitigation strategies should focus on implementing more robust authentication mechanisms that do not rely solely on domain name validation, including cryptographic verification of server identities and certificate-based authentication. Organizations should also consider implementing network-level controls such as DNS filtering and monitoring to detect and prevent DNS hijacking attempts. The recommended approach involves replacing the static domain list with dynamic verification mechanisms that can validate server authenticity through trusted certificate authorities or other cryptographic means. Additionally, security updates should be applied immediately to address this vulnerability, as the attack vector requires minimal sophistication and can be exploited by attackers with basic networking knowledge. This vulnerability demonstrates the importance of implementing defense-in-depth strategies and avoiding single points of failure in security mechanisms, aligning with ATT&CK technique T1190 for exploitation of network infrastructure and T1059 for execution of malicious code through trusted system processes.