CVE-2019-8926 in Netflow Analyzer Professional
Summary
by MITRE
An issue was discovered in Zoho ManageEngine Netflow Analyzer Professional 7.0.0.2. XSS exists in the Administration zone /netflow/jspui/popup1.jsp file via these GET parameters: bussAlert, customDev, and selSource.
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Analysis
by VulDB Data Team • 06/23/2024
The vulnerability identified as CVE-2019-8926 represents a cross-site scripting flaw within Zoho ManageEngine Netflow Analyzer Professional version 7.0.0.2. This security weakness exists in the administrative interface of the network flow analysis tool, specifically within the popup1.jsp file that handles various GET parameters. The affected parameters include bussAlert, customDev, and selSource, which are processed without adequate input validation or output sanitization, creating a potential attack vector for malicious actors seeking to exploit this weakness. The vulnerability resides in the web application's handling of user-supplied data within the administration zone, which is a critical component of network monitoring systems that typically requires elevated privileges and contains sensitive operational data.
This XSS vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically representing a reflected cross-site scripting attack where malicious scripts are injected through the GET parameters and executed in the victim's browser when they navigate to a specially crafted URL. The attack occurs because the application fails to properly encode or escape user input before incorporating it into dynamic web content, allowing an attacker to inject malicious JavaScript code that executes in the context of the victim's session. The exploitation requires minimal user interaction as the malicious payload is embedded within a URL that, when visited, automatically executes the injected script in the victim's browser, potentially leading to session hijacking, data theft, or further compromise of the system.
The operational impact of this vulnerability extends beyond simple script execution, as it could enable attackers to gain unauthorized access to the network flow analyzer's administrative functions. Given that this is a professional-grade network monitoring tool, the compromise of its administrative interface could provide attackers with access to detailed network traffic data, configuration information, and potentially sensitive business network insights. The vulnerability affects the integrity and confidentiality of the network monitoring system, as malicious actors could manipulate the displayed information, steal session cookies, or redirect users to malicious sites. Additionally, the persistence of such vulnerabilities in network monitoring tools poses significant risks to enterprise security infrastructure, as these systems often serve as critical components in security operations centers and are trusted with sensitive operational data.
Mitigation strategies for CVE-2019-8926 should prioritize immediate patching of the affected Zoho ManageEngine Netflow Analyzer Professional version, as this represents the most effective defense against the vulnerability. Organizations should implement input validation and output encoding measures to sanitize all user-supplied parameters before they are processed or rendered in web responses, aligning with OWASP secure coding practices and the principles outlined in the ATT&CK framework for web application attacks. Network administrators should also consider implementing web application firewalls to detect and block malicious requests containing XSS payloads, while conducting regular security assessments of administrative interfaces to identify similar vulnerabilities. The implementation of content security policies and proper session management controls can further reduce the attack surface and limit the potential impact of successful XSS exploitation attempts, ensuring that even if such vulnerabilities exist, their exploitation is significantly mitigated through defensive measures.