CVE-2019-5989 in Access Analysis CGI An-Analyzer
Summary
by MITRE
DOM-based cross-site scripting vulnerability in Access analysis CGI An-Analyzer released in 2019 June 24 and earlier allows remote attackers to inject arbitrary web script or HTML via the Analysis Object Page.
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Analysis
by VulDB Data Team • 03/19/2024
The vulnerability identified as CVE-2019-5989 represents a critical dom-based cross-site scripting flaw within the Access analysis CGI An-Analyzer software suite. This particular vulnerability affects versions released on or before June 24, 2019, making it a significant concern for organizations that may still be operating with legacy implementations of this network analysis tool. The flaw exists within the Analysis Object Page component of the software, which serves as a critical interface for network traffic analysis and monitoring activities. The vulnerability classification aligns with CWE-79 which specifically addresses cross-site scripting vulnerabilities, and more precisely with CWE-116 which deals with improper encoding or escaping of output. The attack surface is particularly concerning given that the software operates in network monitoring environments where it processes and displays network analysis data that could contain user-supplied information.
The technical exploitation mechanism of this vulnerability occurs through the improper handling of user input within the DOM environment of the Analysis Object Page. When users interact with the web interface to view network analysis results, the application fails to properly sanitize or escape data that originates from user-supplied parameters within the URL or other client-side sources. This allows an attacker to craft malicious URLs containing script payloads that execute within the context of the victim's browser session. The dom-based nature of this vulnerability means that the malicious script is injected directly into the client-side javascript execution environment without requiring server-side processing, making it particularly challenging to detect through traditional server-side input validation mechanisms. The vulnerability enables attackers to execute arbitrary javascript code in the victim's browser, potentially leading to session hijacking, data exfiltration, or further exploitation of the compromised user's privileges within the network monitoring environment.
The operational impact of this vulnerability extends beyond simple script execution, as it can be leveraged for comprehensive network reconnaissance and lateral movement within environments where the affected software is deployed. Organizations utilizing this software in production networks face significant risk of unauthorized access to sensitive network monitoring data, including potentially confidential traffic analysis information, network topology details, and user behavioral patterns. The vulnerability can be exploited through social engineering attacks where users are tricked into clicking malicious links, or through direct exploitation in scenarios where attackers have access to network traffic that could be manipulated to include malicious payloads. Attackers could potentially use this vulnerability to establish persistent access to network monitoring systems, especially in environments where these systems are not properly isolated from general network traffic. This flaw directly maps to several ATT&CK techniques including T1566 for social engineering and T1059 for command and scripting interpreter execution, with potential for lateral movement through T1021. The impact is particularly severe in enterprise environments where network monitoring tools are central to security operations and incident response activities.
Mitigation strategies for CVE-2019-5989 should prioritize immediate software updates to versions released after June 24, 2019, which contain proper input validation and output encoding mechanisms. Organizations should implement comprehensive web application firewalls that can detect and block malicious script payloads in real-time, particularly focusing on URL parameters and javascript execution patterns. Network administrators should conduct thorough vulnerability assessments to identify all instances of the affected software across their infrastructure and ensure that proper input sanitization is implemented at all user-facing interfaces. The implementation of content security policies should be enforced to prevent execution of unauthorized scripts, while also ensuring that the application properly escapes all user-supplied data before rendering it within the DOM. Additionally, security awareness training should be conducted to educate users about the risks of clicking suspicious links, particularly in environments where the affected software is used for network analysis. Organizations should also consider implementing network segmentation to isolate network monitoring systems from general user access, reducing the attack surface for this particular vulnerability. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other network monitoring tools and ensure that proper security controls are in place throughout the network infrastructure.