CVE-2019-8925 in Netflow Analyzer Professional
Summary
by MITRE
An issue was discovered in Zoho ManageEngine Netflow Analyzer Professional 7.0.0.2. An Absolute Path Traversal vulnerability in the Administration zone, in /netflow/servlet/CReportPDFServlet (via the parameter schFilePath), allows remote authenticated users to bypass intended SecurityManager restrictions and list a parent directory via any file name, such as a schFilePath=C:\boot.ini value.
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Analysis
by VulDB Data Team • 06/23/2024
The vulnerability identified as CVE-2019-8925 represents a critical absolute path traversal flaw within Zoho ManageEngine Netflow Analyzer Professional version 7.0.0.2. This security weakness exists in the administration zone of the web application and specifically affects the /netflow/servlet/CReportPDFServlet servlet component. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly restrict file path access, allowing malicious actors to manipulate the schFilePath parameter to access arbitrary files on the underlying operating system.
The technical implementation of this vulnerability exploits the SecurityManager restrictions that are typically enforced to prevent unauthorized file system access. Attackers can bypass these protections by crafting malicious input values such as schFilePath=C:oot.ini, which demonstrates how the application fails to properly validate and sanitize user-supplied file paths. This particular flaw enables remote authenticated users to traverse the file system hierarchy and access parent directories, effectively undermining the application's security boundaries. The vulnerability specifically targets the servlet's handling of the schFilePath parameter, where input validation is insufficient to prevent directory traversal sequences from being executed.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with the ability to enumerate directory structures and potentially access sensitive system files that may contain credentials, configuration data, or other confidential information. This type of vulnerability can serve as a stepping stone for more sophisticated attacks, allowing threat actors to gather intelligence about the target system and potentially escalate their privileges within the network. The fact that this vulnerability affects the administration zone makes it particularly dangerous as it provides access to privileged functionality and sensitive data that should be restricted to authorized personnel only.
Organizations utilizing this vulnerable software face significant risk of unauthorized access and potential data breaches. The vulnerability's remote exploitation capability means that attackers do not require physical access to the system to exploit this weakness, making it a particularly attractive target for automated scanning and exploitation campaigns. Security professionals should consider this vulnerability in the context of the ATT&CK framework, specifically under the techniques related to privilege escalation and credential access, as it enables attackers to bypass security controls and gain access to sensitive system resources. This flaw also aligns with CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
Mitigation strategies for this vulnerability should include immediate application of vendor patches and updates to the affected software version. Organizations should implement input validation and sanitization measures to ensure that all user-supplied file paths are properly validated before processing. Network segmentation and access control measures should be strengthened to limit the impact of potential exploitation attempts. Additionally, security monitoring should be enhanced to detect suspicious file access patterns and unauthorized directory traversal attempts. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other applications and systems within the organization's infrastructure.