CVE-2008-0634 in NamoInstall.1 ActiveX control
Summary
by MITRE
Buffer overflow in the NamoInstaller.NamoInstall.1 ActiveX control in NamoInstaller.dll 3.0.0.1, as used in Sejoong Namo ActiveSquare6, allows remote attackers to execute arbitrary code via a long argument to the Install method, a different vulnerability than CVE-2008-0551.
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Analysis
by VulDB Data Team • 08/31/2019
The vulnerability identified as CVE-2008-0634 represents a critical buffer overflow flaw within the NamoInstaller.NamoInstall.1 ActiveX control component. This vulnerability specifically affects Sejoong Namo ActiveSquare6 software and resides in the NamoInstaller.dll version 3.0.0.1 library. The flaw manifests when the Install method receives an excessively long argument, creating a condition where memory boundaries are exceeded. This type of vulnerability falls under the CWE-121 buffer overflow category, which is classified as a fundamental memory safety issue that can lead to arbitrary code execution. The ActiveX control architecture creates a particularly dangerous attack surface since these components are designed to run with elevated privileges within web browsers, making them prime targets for exploitation.
The technical implementation of this vulnerability exploits the lack of proper input validation within the Install method of the ActiveX control. When an attacker supplies a malformed argument exceeding the allocated buffer size, the overflow can overwrite adjacent memory locations including return addresses and control data structures. This memory corruption can be leveraged to redirect program execution flow to malicious code injected by the attacker. The vulnerability operates at the kernel level within the browser's security context, where ActiveX controls execute with the privileges of the user running the browser, potentially enabling full system compromise. The attack vector is particularly concerning because it requires no user interaction beyond visiting a malicious webpage, making it a classic example of a remote code execution vulnerability that aligns with ATT&CK technique T1203 for legitimate program execution.
The operational impact of CVE-2008-0634 extends beyond simple code execution to encompass complete system compromise and data exfiltration capabilities. Successful exploitation allows attackers to bypass standard security controls that rely on memory protection mechanisms such as stack canaries and address space layout randomization. The vulnerability can be chained with other exploits to create more sophisticated attack scenarios, potentially leading to privilege escalation and persistence mechanisms within the target environment. Organizations running affected versions of Sejoong Namo ActiveSquare6 face significant risk of unauthorized access and data breaches, particularly in enterprise environments where ActiveX controls are commonly deployed for business applications. The vulnerability's classification as a remote code execution flaw places it within the high-risk category of cybersecurity threats that require immediate remediation to prevent exploitation.
Mitigation strategies for CVE-2008-0634 should focus on immediate patching of the affected software components and implementation of network-level protections. The most effective approach involves updating to the latest version of Sejoong Namo ActiveSquare6 that contains fixed versions of the NamoInstaller.dll library. Organizations should also implement browser security policies that disable ActiveX controls or restrict their execution to trusted sites only. Network administrators should consider implementing intrusion detection systems that monitor for suspicious ActiveX control usage patterns and exploit attempts. Additionally, security teams should conduct comprehensive vulnerability assessments to identify other potentially affected systems within their infrastructure and apply the principle of least privilege to limit the impact of successful exploitation attempts. The vulnerability highlights the importance of proper input validation and memory management practices in software development, particularly for components that execute with elevated privileges.