CVE-2004-1483 in Clientless Vpn Gateway 4400
Summary
by MITRE
Multiple unknown vulnerabilities in the ActiveX and HTML file browsers in Symantec Clientless VPN Gateway 4400 Series 5.0 have unknown attack vectors and unknown impact.
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Analysis
by VulDB Data Team • 11/21/2024
The Symantec Clientless VPN Gateway 4400 Series version 5.0 contains multiple undisclosed vulnerabilities within its ActiveX and HTML file browser components that represent significant security risks to organizations relying on this network infrastructure. These vulnerabilities exist in the client-side components that handle file browsing operations and ActiveX controls, creating potential entry points for malicious actors to compromise systems. The lack of specific details regarding attack vectors and impact levels indicates that these flaws may be particularly concerning as they could potentially allow for arbitrary code execution, privilege escalation, or information disclosure attacks. The ActiveX controls and HTML file browsers in this gateway implementation appear to lack proper input validation and sanitization mechanisms that would normally prevent malicious code from being executed within the context of the browser or file handling components. This vulnerability class falls under the broader category of client-side exploitation techniques that leverage browser-based attack surfaces to gain unauthorized access to systems. The presence of unknown attack vectors suggests that these vulnerabilities may be particularly difficult to detect and exploit, potentially allowing for sophisticated attacks that could bypass traditional security controls.
The technical implementation of the ActiveX and HTML file browsers in the Symantec Clientless VPN Gateway 4400 Series likely suffers from inadequate security measures that allow malicious input to be processed without proper validation or sanitization. These components may be vulnerable to cross-site scripting attacks, buffer overflow conditions, or other input manipulation techniques that could enable attackers to execute arbitrary code within the context of the user's browser session. The vulnerabilities may stem from improper handling of file paths, insufficient validation of user-supplied data, or lack of proper access controls within the file browsing functionality. The attack surface extends beyond simple browser-based exploitation to include potential privilege escalation opportunities that could allow attackers to gain elevated system access. These flaws represent a significant concern given that the gateway serves as a critical network access point where users connect to corporate resources, making it a prime target for attackers seeking to establish persistent access to internal networks.
The operational impact of these undisclosed vulnerabilities could be severe for organizations using the Symantec Clientless VPN Gateway 4400 Series 5.0, as they may provide attackers with opportunities to establish unauthorized access to corporate networks, steal sensitive data, or disrupt business operations. The unknown nature of the attack vectors and impact means that organizations cannot accurately assess their risk exposure or implement targeted defensive measures. These vulnerabilities could potentially enable attackers to perform reconnaissance activities, escalate privileges, or establish backdoors within the network infrastructure. The Clientless VPN Gateway serves as a critical access control point, making any compromise of its security components potentially devastating to organizational security posture. The impact extends beyond immediate system compromise to include potential data breaches, regulatory compliance violations, and damage to organizational reputation. Organizations may face challenges in identifying affected systems and implementing appropriate security controls due to the lack of specific vulnerability details.
Organizations utilizing the Symantec Clientless VPN Gateway 4400 Series 5.0 should immediately implement comprehensive security measures to mitigate potential risks from these undisclosed vulnerabilities. The recommended approach includes deploying network segmentation strategies to limit the attack surface, implementing additional authentication controls, and establishing monitoring procedures to detect anomalous behavior. Security teams should consider isolating the affected gateway components from critical network segments and implementing network access controls to restrict unauthorized access attempts. Regular security assessments should be conducted to identify potential exploitation attempts, and organizations should monitor for any emerging threat intelligence related to these vulnerabilities. The implementation of web application firewalls and intrusion detection systems can provide additional layers of protection against potential exploitation attempts. Organizations should also consider implementing endpoint protection solutions that can detect and prevent malicious code execution within browser environments. Given the unknown nature of the attack vectors, defensive measures should focus on reducing the overall attack surface and implementing robust monitoring capabilities to detect any unauthorized access attempts.
The vulnerabilities present in the Symantec Clientless VPN Gateway 4400 Series 5.0 align with common security weaknesses identified in the CWE database, particularly those related to improper input validation and insecure ActiveX control handling. These issues may manifest as CWE-79 Cross-Site Scripting, CWE-119 Improper Restriction of Operations within a Single-System, or CWE-20 Improper Input Validation. The attack patterns associated with these vulnerabilities would likely follow techniques described in the MITRE ATT&CK framework under the T1071 Application Layer Protocol and T1059 Command and Scripting Interpreter tactics. Organizations should review their security configurations to ensure proper input validation is implemented and that ActiveX controls are properly restricted to prevent unauthorized code execution. The lack of specific vulnerability details makes traditional patch management approaches difficult, requiring organizations to implement compensating controls and maintain heightened security awareness. Security teams should consider implementing zero-trust network access principles to reduce the potential impact of any successful exploitation attempts. Regular security awareness training for personnel who interact with the gateway components can help identify potential social engineering attacks that might leverage these vulnerabilities.