CVE-2019-8927 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/scheduleConfig.jsp file via these GET parameters: devSrc, emailId, excWeekModify, filterFlag, getFilter, mailReport, mset, popup, rep_schedule, rep_Type, schDesc, schName, schSource, selectDeviceDone, task, val10, and val11.
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Analysis
by VulDB Data Team • 06/23/2024
The vulnerability identified as CVE-2019-8927 represents a cross-site scripting flaw within Zoho ManageEngine Netflow Analyzer Professional version 7.0.0.2, specifically manifesting in the administration zone at the /netflow/jspui/scheduleConfig.jsp endpoint. This issue arises from insufficient input validation and output encoding mechanisms that fail to properly sanitize user-supplied data passed through various GET parameters. The affected parameters include devSrc, emailId, excWeekModify, filterFlag, getFilter, mailReport, mset, popup, rep_schedule, rep_Type, schDesc, schName, schSource, selectDeviceDone, task, val10, and val11, all of which can be manipulated to inject malicious scripts into the application's response. The vulnerability resides in the application's failure to implement proper security controls during the processing of user input, creating an attack surface that allows malicious actors to execute unauthorized scripts in the context of authenticated users' browsers.
This cross-site scripting vulnerability operates under the Common Weakness Enumeration classification of CWE-79, which specifically addresses Cross-Site Scripting flaws in web applications. The attack vector leverages the application's lack of proper input sanitization and output encoding, enabling threat actors to inject malicious JavaScript code that executes within the victim's browser session. The impact extends beyond simple script execution as it can potentially allow attackers to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious sites. The vulnerability is particularly concerning in the context of network monitoring tools like Netflow Analyzer, where administrators typically possess elevated privileges and access to sensitive network data and configurations.
The operational implications of this vulnerability are significant for organizations utilizing Zoho ManageEngine Netflow Analyzer Professional, as it creates opportunities for attackers to compromise the security of the network monitoring infrastructure. An authenticated attacker could exploit this flaw to execute scripts that might capture user credentials, modify network configurations, or exfiltrate sensitive monitoring data. The attack requires minimal privileges since the vulnerability exists in the administration zone, making it accessible to users with appropriate access rights. The exploitation process involves crafting malicious URLs with the vulnerable GET parameters, which when accessed by a victim user, would execute the injected JavaScript code in their browser context, potentially leading to complete session hijacking or privilege escalation within the application.
Organizations should implement immediate mitigations including input validation and output encoding controls to prevent the execution of unauthorized scripts. The recommended approach involves implementing proper parameter sanitization at the application level, ensuring all user-supplied data is validated and escaped before being rendered in web responses. Additionally, organizations should consider implementing Content Security Policy headers to limit script execution sources and prevent unauthorized code injection. Network segmentation and access control measures should be strengthened to limit exposure of the vulnerable application to untrusted users. The vulnerability also highlights the importance of regular security assessments and patch management procedures, as this issue was resolved through subsequent software updates that properly addressed the input validation gaps in the affected application components.