CVE-2018-5433 in Administrator
Summary
by MITRE
The TIBCO Administrator server component of TIBCO Software Inc.'s TIBCO Administrator - Enterprise Edition, and TIBCO Administrator - Enterprise Edition for z/Linux contains vulnerabilities wherein a malicious user could perform XML external entity expansion (XXE) attacks to disclose host machine information. Affected releases are TIBCO Software Inc.'s TIBCO Administrator - Enterprise Edition: versions up to and including 5.10.0, and TIBCO Administrator - Enterprise Edition for z/Linux: versions up to and including 5.9.1.
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Analysis
by VulDB Data Team • 03/27/2023
The vulnerability identified as CVE-2018-5433 represents a critical security flaw within the TIBCO Administrator server component that affects enterprise deployment environments. This issue stems from insufficient input validation mechanisms within the XML processing framework of the TIBCO Administrator software, specifically impacting versions up to and including 5.10.0 for the standard edition and 5.9.1 for the z/Linux edition. The vulnerability exists in the server-side processing of XML data, creating an attack surface where malicious actors can exploit malformed XML requests to gain unauthorized access to underlying system information. The affected TIBCO Administrator components are part of the broader TIBCO Software Inc. enterprise messaging and integration platform, making this vulnerability particularly concerning for organizations relying on TIBCO's middleware solutions for critical business operations.
The technical implementation of this vulnerability follows the classic XML external entity expansion attack pattern, which is categorized under CWE-611 in the Common Weakness Enumeration system. Attackers can craft specially formatted XML requests that include external entity declarations, allowing them to trigger the expansion of entities that reference local files or network resources on the target host system. When the vulnerable TIBCO Administrator server processes these requests, it fails to properly sanitize XML input, enabling the XML parser to resolve external entities and potentially disclose sensitive information such as file system contents, network configurations, or other host-specific data. This weakness directly enables information disclosure attacks that align with techniques described in the MITRE ATT&CK framework under the information gathering and reconnaissance phases.
The operational impact of CVE-2018-5433 extends beyond simple information disclosure, as it provides attackers with valuable reconnaissance data that can be used to plan more sophisticated attacks against the target environment. Organizations using affected TIBCO Administrator versions face potential exposure of internal network topology information, system configuration details, and possibly sensitive file contents that could aid in privilege escalation or lateral movement attacks. The vulnerability particularly affects enterprise environments where TIBCO Administrator serves as a central management interface for middleware components, making it a valuable target for attackers seeking to understand and compromise complex enterprise integration architectures. The impact is compounded by the fact that these administrators often possess elevated privileges and access to critical system resources.
Mitigation strategies for CVE-2018-5433 should focus on implementing proper XML input validation and disabling external entity resolution within the affected TIBCO Administrator components. Organizations should immediately upgrade to patched versions of TIBCO Administrator software, as TIBCO released updates specifically addressing this XXE vulnerability. Security configurations should include disabling the ability to process external entities in XML parsers, implementing strict input validation for all XML processing, and applying network segmentation controls to limit access to the affected administrator interfaces. Additionally, organizations should monitor network traffic for suspicious XML requests and implement security controls such as web application firewalls that can detect and block XXE attack patterns. The remediation efforts should align with industry best practices for XML security as outlined in OWASP Top 10 and NIST cybersecurity guidelines, ensuring that the underlying XML processing mechanisms are hardened against similar vulnerabilities in the future.