CVE-2009-2288 in Nagios
Summary
by MITRE
statuswml.cgi in Nagios before 3.1.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) ping or (2) Traceroute parameters.
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Analysis
by VulDB Data Team • 09/08/2024
The vulnerability described in CVE-2009-2288 represents a critical command injection flaw in Nagios monitoring software versions prior to 3.1.1. This issue specifically affects the statuswml.cgi component which is responsible for generating web-based status reports for network monitoring operations. The vulnerability stems from inadequate input validation and sanitization within the web interface, creating an avenue for remote attackers to inject malicious shell commands through carefully crafted parameters. The affected parameters include both the ping and traceroute functionality which are commonly used monitoring utilities within network management systems. This flaw demonstrates a classic lack of proper input sanitization that directly violates security best practices and industry standards.
The technical exploitation of this vulnerability occurs through the manipulation of web parameters that are passed directly to system commands without proper filtering or escaping. When an attacker submits malicious input containing shell metacharacters such as semicolons, ampersands, or backticks within the ping or traceroute fields, these characters are interpreted by the underlying shell and executed with the privileges of the web server process. This represents a clear violation of the principle of least privilege and demonstrates how insufficient input validation can lead to complete system compromise. The vulnerability operates at the application layer and can be exploited remotely without requiring authentication, making it particularly dangerous in production environments where Nagios is deployed. This type of flaw maps directly to CWE-77 and CWE-88 within the Common Weakness Enumeration catalog, which specifically address command injection vulnerabilities.
The operational impact of this vulnerability extends far beyond simple data theft or service disruption. An attacker who successfully exploits this vulnerability can execute arbitrary commands on the affected system with the same privileges as the web server process, which typically runs with elevated permissions to perform network monitoring functions. This could potentially allow for complete system compromise, data exfiltration, or the establishment of persistent backdoors within the network infrastructure. The implications are particularly severe in enterprise environments where Nagios is often used as a central monitoring solution, as the compromise of a single monitoring server can provide attackers with visibility into multiple network segments. Organizations using older versions of Nagios are at risk of unauthorized access to sensitive network information and potential lateral movement within their infrastructure, making this vulnerability a significant concern for cybersecurity teams.
Mitigation strategies for CVE-2009-2288 focus primarily on immediate remediation through software updates to Nagios version 3.1.1 or later, which includes proper input validation and sanitization measures. Organizations should also implement network segmentation and access controls to limit exposure of monitoring systems to untrusted networks. Additional protective measures include disabling unnecessary web interface features, implementing proper input filtering at the application level, and conducting regular security assessments of monitoring infrastructure. The vulnerability highlights the importance of maintaining up-to-date software versions and implementing defense-in-depth strategies as recommended by the MITRE ATT&CK framework for operational security. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other monitoring and management systems that may be susceptible to command injection attacks.