CVE-2019-7422 in ManageEngine Netflow Analyzer
Summary
by MITRE
XSS exists in Zoho ManageEngine Netflow Analyzer Professional v7.0.0.2 in the Administration zone "/netflow/jspui/addMailSettings.jsp" file in the gF parameter.
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Analysis
by VulDB Data Team • 08/04/2023
The vulnerability identified as CVE-2019-7422 represents a cross-site scripting flaw within Zoho ManageEngine Netflow Analyzer Professional version 7.0.0.2 that specifically affects the administrative interface. This issue manifests in the addMailSettings.jsp page where user input is not properly sanitized before being rendered back to the browser, creating an avenue for malicious actors to inject malicious scripts. The vulnerability resides in the gF parameter handling mechanism, which processes user-supplied data without adequate validation or output encoding, making it susceptible to exploitation by attackers who can craft malicious payloads to be executed in the context of authenticated administrative sessions.
The technical exploitation of this vulnerability follows a typical XSS attack pattern where an attacker can manipulate the gF parameter through the addMailSettings.jsp endpoint to inject malicious JavaScript code. When the application processes this parameter and displays it in the administrative interface without proper sanitization, the injected script executes in the browser of any user who views the affected page. This creates a persistent threat vector that can be leveraged for session hijacking, credential theft, or redirection to malicious sites. The vulnerability falls under CWE-79 which categorizes improper neutralization of input during web page generation, specifically addressing the failure to sanitize user inputs that are subsequently rendered in web contexts. The attack surface is particularly concerning given that the affected endpoint resides within the administration zone, meaning successful exploitation would grant attackers elevated privileges within the network monitoring system.
The operational impact of this vulnerability extends beyond simple script execution as it compromises the integrity of the entire network monitoring infrastructure. Since the affected application is part of the Netflow Analyzer suite, attackers who successfully exploit this XSS flaw could potentially gain unauthorized access to network flow data, manipulate monitoring configurations, or establish persistent backdoors within the network infrastructure. The vulnerability represents a critical risk to network security operations because it allows attackers to compromise the administrative interface of a network monitoring tool that likely contains sensitive information about network traffic patterns, user activities, and system configurations. The attack could be executed through various vectors including phishing emails, compromised user accounts, or direct web-based exploitation, making it particularly dangerous for organizations that rely on this monitoring solution for security operations. According to ATT&CK framework, this vulnerability maps to T1059.007 for script injection and T1566.001 for spearphishing with a link, demonstrating how the vulnerability can be leveraged to establish initial access and subsequently escalate privileges within the network monitoring environment.
Mitigation strategies for this vulnerability should include immediate patching of the affected Zoho ManageEngine Netflow Analyzer Professional version to the latest available release that addresses this XSS flaw. Organizations should also implement input validation and output encoding mechanisms at the application level to prevent similar issues in other components of the system. Network segmentation and privileged access controls should be enforced to limit the potential damage from successful exploitation attempts. Additionally, regular security assessments of administrative interfaces and web applications should be conducted to identify and remediate similar vulnerabilities. The implementation of web application firewalls and content security policies can provide additional layers of protection against XSS attacks. Organizations should also consider implementing security awareness training for administrators to recognize potential phishing attempts that could lead to exploitation of this vulnerability, as the attack often begins with social engineering techniques targeting network administrators who might inadvertently trigger the XSS payload through malicious links or attachments.