CVE-2007-2938 in ATNBaseLoader100 Module
Summary
by MITRE
Buffer overflow in the BaseRunner ActiveX control in the Ademco ATNBaseLoader100 Module (ATNBaseLoader100.dll) 5.4.0.6, when Internet Explorer 6 is used, allows remote attackers to execute arbitrary code via a long argument to the (1) Send485CMD method, and possibly the (2) SetLoginID, (3) AddSite, (4) SetScreen, and (5) SetVideoServer methods.
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Analysis
by VulDB Data Team • 09/19/2024
The vulnerability identified as CVE-2007-2938 represents a critical buffer overflow flaw within the BaseRunner ActiveX control component of the Ademco ATNBaseLoader100 Module version 5.4.0.6. This vulnerability specifically targets systems running Internet Explorer 6 and presents a significant security risk that can be exploited by remote attackers to gain unauthorized code execution capabilities. The flaw resides in the ATNBaseLoader100.dll dynamic link library which is part of a larger security monitoring and control system designed for industrial and commercial applications.
The technical implementation of this vulnerability stems from improper input validation within several methods of the ActiveX control, particularly the Send485CMD method which accepts excessively long arguments without proper bounds checking. Additionally, the vulnerability extends to five other methods including SetLoginID, AddSite, SetScreen, and SetVideoServer, all of which suffer from similar buffer overflow conditions. These methods are designed to handle user input for various configuration and operational parameters within the security system, making them prime targets for exploitation. The buffer overflow occurs when the ActiveX control attempts to copy user-supplied data into fixed-length memory buffers without adequate size validation, leading to memory corruption that can be leveraged for code execution.
The operational impact of this vulnerability is severe and multifaceted, as it enables remote code execution capabilities that can be exploited from anywhere on the internet. Attackers can craft malicious web pages or send specially crafted data packets that trigger the buffer overflow conditions when the vulnerable ActiveX control is loaded in Internet Explorer 6. This creates a persistent threat vector that can compromise entire networks, as the control is designed for security monitoring applications that typically operate in sensitive environments. The exploitation can result in complete system compromise, data theft, unauthorized access to security systems, and potential disruption of critical infrastructure operations. According to CWE classification, this vulnerability maps to CWE-121, which describes heap-based buffer overflow conditions, and aligns with ATT&CK technique T1059.007 for command and script interpreter execution through ActiveX controls.
Mitigation strategies for CVE-2007-2938 should prioritize immediate system hardening measures including disabling ActiveX controls in Internet Explorer 6 environments, implementing strict browser security policies, and applying the latest security patches from the vendor. Organizations should consider deploying network segmentation to isolate systems running vulnerable ActiveX controls, implementing application whitelisting policies to prevent unauthorized ActiveX control loading, and conducting thorough vulnerability assessments to identify all instances of the vulnerable ATNBaseLoader100 module. The most effective long-term solution involves upgrading to newer versions of the security software that do not contain these buffer overflow vulnerabilities, as the original vulnerable version is from 2007 and no longer receives security updates. Additionally, system administrators should implement monitoring solutions to detect potential exploitation attempts and establish incident response procedures specifically designed to handle ActiveX-based security breaches.