CVE-2018-18809 in JasperReports Library
Summary
by MITRE
The default server implementation of TIBCO Software Inc.'s TIBCO JasperReports Library, TIBCO JasperReports Library Community Edition, TIBCO JasperReports Library for ActiveMatrix BPM, TIBCO JasperReports Server, TIBCO JasperReports Server Community Edition, TIBCO JasperReports Server for ActiveMatrix BPM, TIBCO Jaspersoft for AWS with Multi-Tenancy, and TIBCO Jaspersoft Reporting and Analytics for AWS contains a directory-traversal vulnerability that may theoretically allow web server users to access contents of the host system. Affected releases are TIBCO Software Inc.'s TIBCO JasperReports Library: versions up to and including 6.3.4; 6.4.1; 6.4.2; 6.4.21; 7.1.0; 7.2.0, TIBCO JasperReports Library Community Edition: versions up to and including 6.7.0, TIBCO JasperReports Library for ActiveMatrix BPM: versions up to and including 6.4.21, TIBCO JasperReports Server: versions up to and including 6.3.4; 6.4.0; 6.4.1; 6.4.2; 6.4.3; 7.1.0, TIBCO JasperReports Server Community Edition: versions up to and including 6.4.3; 7.1.0, TIBCO JasperReports Server for ActiveMatrix BPM: versions up to and including 6.4.3, TIBCO Jaspersoft for AWS with Multi-Tenancy: versions up to and including 7.1.0, TIBCO Jaspersoft Reporting and Analytics for AWS: versions up to and including 7.1.0.
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Analysis
by VulDB Data Team • 01/27/2025
The vulnerability identified as CVE-2018-18809 represents a critical directory traversal flaw within multiple TIBCO JasperReports products, specifically affecting versions through 7.1.0 across various editions including Community, ActiveMatrix BPM, and AWS deployments. This security weakness stems from insufficient input validation in the server implementation, allowing malicious users to manipulate file path references and potentially access unauthorized system resources. The flaw manifests when the application fails to properly sanitize user-supplied parameters that are used to construct file paths, creating opportunities for attackers to navigate beyond intended directories and retrieve sensitive files from the underlying host system.
The technical exploitation of this vulnerability follows established patterns consistent with CWE-22 Directory Traversal attacks, where attackers can manipulate path references through sequences such as "../" or similar constructs to move up directory trees. This weakness specifically impacts the web server components of these JasperReports implementations, potentially enabling unauthorized access to configuration files, source code, database credentials, and other sensitive system artifacts. The vulnerability's scope extends across multiple TIBCO JasperReports variants, indicating a widespread implementation issue rather than a localized bug, affecting both commercial and community editions of the software suite.
Operational impact of this directory traversal vulnerability is significant, as successful exploitation could lead to complete system compromise, data exfiltration, and potential lateral movement within affected networks. Attackers leveraging this vulnerability could access critical system information, including but not limited to application configuration files, database connection strings, and potentially sensitive business data stored within the JasperReports environment. The attack vector typically involves sending crafted HTTP requests containing malicious path traversal sequences to the vulnerable web endpoints, which then process these inputs without adequate sanitization, resulting in unauthorized file access. This vulnerability aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1566 (Phishing) as attackers may use this weakness to gather intelligence before more sophisticated attacks.
Organizations utilizing affected TIBCO JasperReports versions should immediately implement mitigation strategies including patching to supported versions, implementing proper input validation controls, and deploying web application firewalls to filter malicious path traversal attempts. The vulnerability demonstrates the importance of secure coding practices and proper parameter validation in web applications, particularly those handling user input for file operations. System administrators should also conduct comprehensive security assessments to identify any other potential traversal vulnerabilities within their JasperReports deployments, as the flaw may have enabled additional attack surfaces beyond the primary directory traversal path. Regular security updates and vulnerability management processes become critical in preventing exploitation of similar weaknesses in other components of the TIBCO JasperReports ecosystem.