CVE-2018-11587 in Web
Summary
by MITRE
There is Remote Code Execution in Centreon 3.4.6 including Centreon Web 2.8.23 via the RPN value in the Virtual Metric form in centreonGraph.class.php.
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Analysis
by VulDB Data Team • 08/27/2024
The vulnerability CVE-2018-11587 represents a critical remote code execution flaw discovered in Centreon version 3.4.6, specifically affecting Centreon Web 2.8.23. This vulnerability resides within the centreonGraph.class.php file and is triggered through manipulation of the RPN value in the Virtual Metric form. Centreon is a widely deployed network and infrastructure monitoring solution that provides real-time monitoring capabilities for IT environments, making this vulnerability particularly dangerous as it could allow attackers to execute arbitrary code on affected systems. The flaw stems from insufficient input validation and sanitization of user-supplied data within the graphing component of the platform.
The technical implementation of this vulnerability involves the improper handling of RPN (Reverse Polish Notation) expressions within the virtual metric functionality. When users submit RPN values through the web interface, the system fails to properly sanitize or validate these inputs before processing them in a manner that could lead to code injection. This represents a classic command injection vulnerability where malicious RPN expressions can be crafted to execute system commands on the server hosting the Centreon application. The vulnerability aligns with CWE-77 and CWE-94 categories, which encompass command injection and code injection flaws respectively, and maps to ATT&CK technique T1059.007 for scripting languages and T1059.001 for command and scripting interpreters.
The operational impact of this vulnerability is severe and far-reaching for organizations utilizing affected Centreon versions. Attackers who successfully exploit this vulnerability can gain full control over the Centreon server, potentially leading to data exfiltration, system compromise, and lateral movement within the network. Given that Centreon systems often serve as critical monitoring points for enterprise infrastructure, the compromise of such systems can result in significant operational disruption and security breaches. The vulnerability affects the core monitoring functionality and could be exploited by attackers to hide their presence, establish persistence, or escalate privileges within the monitored environment.
Organizations should implement immediate mitigations including applying the vendor-provided patches and updates released for this vulnerability, which typically involve input validation improvements and sanitization of RPN expressions. Network segmentation and access controls should be enforced to limit exposure of the Centreon web interface to untrusted networks. Additionally, implementing web application firewalls and monitoring for suspicious RPN expression patterns can help detect potential exploitation attempts. Security teams should also consider disabling unnecessary features and conducting thorough code reviews of custom extensions to ensure no similar vulnerabilities exist in modified components. Regular vulnerability assessments and penetration testing should be performed to identify and remediate similar issues throughout the monitoring infrastructure.