CVE-2019-11364 in Central
Summary
by MITRE
An OS Command Injection vulnerability in Snare Central before 7.4.5 allows remote authenticated attackers to inject arbitrary OS commands via the ServerConf/DataManagement/DiskManager.php FORMNAS_share parameter.
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Analysis
by VulDB Data Team • 08/10/2020
The vulnerability identified as CVE-2019-11364 represents a critical operating system command injection flaw within the Snare Central security monitoring platform. This issue affects versions prior to 7.4.5 and enables remote authenticated attackers to execute arbitrary operating system commands on the affected system. The vulnerability specifically manifests through the ServerConf/DataManagement/DiskManager.php component where the FORMNAS_share parameter is improperly validated and sanitized, creating a direct pathway for command injection attacks. The flaw stems from insufficient input validation mechanisms that fail to properly filter or escape user-supplied data before processing, allowing malicious payloads to be interpreted as legitimate system commands rather than mere input data.
The technical exploitation of this vulnerability requires an attacker to possess valid authentication credentials to access the Snare Central administrative interface. Once authenticated, the attacker can manipulate the FORMNAS_share parameter within the DiskManager.php script to inject malicious commands that will be executed with the privileges of the web application process. This creates a significant escalation path from authenticated user access to potential system compromise, as the web application typically runs with elevated privileges to perform system management functions. The vulnerability aligns with CWE-77, which categorizes command injection flaws as weaknesses that occur when an application passes untrusted data to an operating system command without proper sanitization or validation.
From an operational perspective, this vulnerability poses substantial risks to organizations relying on Snare Central for security monitoring and log management. The ability to execute arbitrary commands remotely allows attackers to potentially escalate privileges, access sensitive system files, install backdoors, or even compromise the entire underlying infrastructure. The impact extends beyond simple command execution as attackers can leverage this vulnerability to perform reconnaissance activities, establish persistent access, and conduct further attacks within the network environment. This type of vulnerability directly violates the principle of least privilege and can lead to complete system compromise, particularly when the web application runs with administrative or root-level permissions.
Organizations should implement immediate mitigations including updating to Snare Central version 7.4.5 or later, which contains the necessary patches to address the command injection vulnerability. Network segmentation and access control measures should be strengthened to limit the attack surface, ensuring that only authorized personnel can access the administrative interfaces. Input validation and sanitization mechanisms should be enhanced to properly filter all user-supplied data, implementing proper escaping and encoding techniques to prevent command injection attacks. Additionally, organizations should deploy web application firewalls and intrusion detection systems to monitor for suspicious command execution patterns. The vulnerability demonstrates the importance of following secure coding practices and adheres to ATT&CK technique T1059.001 for Command and Scripting Interpreter, highlighting the need for comprehensive security controls that address both application-level and network-level threats in accordance with cybersecurity frameworks such as NIST SP 800-53 and ISO 27001 standards.