CVE-2016-9261 in Log Correlation Engine
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Tenable Log Correlation Engine (aka LCE) before 4.8.1 allows remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 09/02/2020
The Cross-site scripting vulnerability identified as CVE-2016-9261 affects the Tenable Log Correlation Engine (LCE) software version prior to 4.8.1, representing a significant security weakness that enables remote authenticated attackers to execute malicious web scripts or HTML code within the context of affected systems. This vulnerability falls under the broader category of web application security flaws that compromise user sessions and data integrity. The affected Tenable LCE platform serves as a critical component for log management and correlation within enterprise security infrastructure, making this vulnerability particularly concerning for organizations relying on its capabilities for threat detection and compliance monitoring.
The technical flaw manifests through unspecified vectors within the LCE application's input validation mechanisms, allowing authenticated users to inject malicious scripts that can be executed by other users who access the affected system. This type of vulnerability typically occurs when applications fail to properly sanitize user-supplied input before rendering it in web pages, creating opportunities for attackers to manipulate application behavior and potentially escalate privileges. The vulnerability's classification aligns with CWE-79, which specifically addresses Cross-site Scripting flaws in web applications, where insufficient input sanitization creates pathways for malicious code execution. The fact that this vulnerability requires authentication suggests it may be exploitable through compromised credentials or insider threats, though the exact attack vectors remain unspecified in the CVE description.
The operational impact of this vulnerability extends beyond simple script injection, potentially enabling attackers to access sensitive data, manipulate user sessions, and compromise the integrity of log correlation processes that organizations depend upon for security monitoring. In a security context, this weakness could allow adversaries to exfiltrate log data, modify security events, or create false alarms that could obscure real security incidents. Organizations using Tenable LCE for compliance reporting and security incident response would face significant risks as attackers could manipulate the very logs they rely on for forensic analysis. The vulnerability's remote exploitation capability means that attackers do not need physical access to systems, and the authenticated requirement reduces the barrier to successful exploitation compared to fully remote attacks. This type of vulnerability is particularly dangerous in environments where LCE is used for security information and event management, as it could undermine the trustworthiness of the entire security monitoring infrastructure.
Organizations should implement immediate mitigation strategies including updating to Tenable LCE version 4.8.1 or later, which contains the necessary patches to address this vulnerability. System administrators should also consider implementing additional security controls such as web application firewalls and input validation measures that can provide defense-in-depth against similar vulnerabilities. The remediation process should include thorough testing of the updated software to ensure that the patch does not introduce compatibility issues with existing security workflows or monitoring processes. Security teams should conduct comprehensive vulnerability assessments to identify any other potential XSS vulnerabilities within their Tenable LCE environments and related systems. Additionally, organizations should review their access control policies to minimize the risk of privilege escalation through authenticated exploitation and implement network segmentation to limit the potential impact of successful attacks. The vulnerability demonstrates the importance of maintaining current security patches and implementing proper input validation across all web applications, particularly those handling sensitive security data and logs.