CVE-2019-17643 in Centreon
Summary
by MITRE
An issue was discovered in Centreon before 2.8-30,18.10-8, 19.04-5, and 19.10-2. It provides sensitive information via an unauthenticated direct request for include/monitoring/recurrentDowntime/GetXMLHost4Services.php.
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Analysis
by VulDB Data Team • 03/05/2020
The vulnerability identified as CVE-2019-17643 represents a critical information disclosure flaw in Centreon monitoring software affecting versions prior to 2.8-30, 18.10-8, 19.04-5, and 19.10-2. This issue stems from an insufficient access control mechanism that allows unauthenticated attackers to directly access sensitive data through a specific endpoint. The vulnerable file include/monitoring/recurrentDowntime/GetXMLHost4Services.php exposes internal monitoring information without requiring proper authentication or authorization checks, creating a significant security risk for organizations relying on Centreon for system monitoring.
The technical implementation of this vulnerability involves a direct request mechanism that bypasses normal authentication flows within the Centreon application. When an attacker accesses the GetXMLHost4Services.php endpoint without authentication, the system fails to validate the requestor's credentials or privileges before serving sensitive monitoring data. This flaw operates at the application layer and demonstrates poor input validation and access control implementation. The vulnerability aligns with CWE-284, which addresses improper access control issues, and represents a classic case of insufficient authorization checks where the system assumes all requests are legitimate without proper verification.
The operational impact of this vulnerability extends beyond simple information disclosure, as the exposed data could include host monitoring information, service statuses, and potentially other sensitive operational details that would normally be restricted to authorized personnel only. Attackers could leverage this vulnerability to gather intelligence about network infrastructure, identify vulnerable systems, and potentially plan more sophisticated attacks. The exposure of monitoring data could reveal critical system configurations, service dependencies, and operational patterns that would be valuable for attackers seeking to exploit other vulnerabilities within the monitored environment. This information could also be used to map network topology and identify potential attack vectors that might not be visible through other reconnaissance methods.
Organizations affected by this vulnerability should immediately implement the available patches and updates provided by Centreon to address the authentication bypass issue. The recommended mitigation strategy includes ensuring that all endpoints requiring sensitive information access properly validate authentication credentials and implement appropriate authorization checks before serving any data. Network segmentation and access control measures should be strengthened to limit direct access to monitoring endpoints, and regular security assessments should be conducted to identify similar authorization flaws. The vulnerability demonstrates the importance of implementing defense-in-depth strategies where multiple layers of security controls work together to protect sensitive information, aligning with ATT&CK technique T1083 for discovering system information and T1566 for credential harvesting through reconnaissance activities.