CVE-2016-1497 in BIG-IP
Summary
by MITRE
The Configuration utility in F5 BIG-IP systems 11.0.x, 11.1.x, 11.2.x before 11.2.1 HF16, 11.3.x, 11.4.x before 11.4.1 HF10, 11.5.x before 11.5.4 HF2, 1.6.x before 11.6.1, and 12.0.0 before HF1 allows remote administrators to read Access Policy Manager (APM) access logs via unspecified vectors.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 09/14/2022
The vulnerability identified as CVE-2016-1497 affects F5 BIG-IP systems across multiple version ranges, specifically targeting the Configuration utility component that manages Access Policy Manager (APM) functionality. This issue represents a significant information disclosure weakness that enables remote administrative attackers to access sensitive APM access logs through unspecified attack vectors. The vulnerability exists within the system's privilege management and access control mechanisms, allowing unauthorized access to audit and monitoring data that should remain restricted to authorized personnel only.
The technical flaw stems from inadequate access controls within the Configuration utility's implementation, where remote administrators can potentially bypass normal security boundaries to retrieve APM access logs. This represents a classic privilege escalation and information disclosure vulnerability where the system fails to properly validate access permissions for sensitive operational data. The unspecified vectors suggest that the attack could potentially occur through multiple pathways including network-based exploitation, web interface manipulation, or API access points that lack proper authentication checks.
From an operational impact perspective, this vulnerability compromises the integrity of the system's security monitoring capabilities and exposes sensitive operational data that could be leveraged for further attacks. Access logs contain critical information about user authentication attempts, access patterns, and system behavior that adversaries could use to understand system vulnerabilities, plan targeted attacks, or conduct advanced persistent threat operations. The exposure of APM logs could reveal detailed information about user sessions, authentication failures, and access control decisions that would normally remain confidential within a properly secured environment.
Organizations affected by this vulnerability face significant risk to their security posture, particularly in environments where APM is used for critical access control and authentication management. The ability to read access logs remotely without proper authorization undermines the fundamental security model of the BIG-IP system and could lead to cascading security issues if attackers use the disclosed information to identify system weaknesses or plan more sophisticated attacks. This vulnerability aligns with CWE-284 (Improper Access Control) and represents a failure in the principle of least privilege enforcement within the system's configuration management interface.
The recommended mitigations include immediate application of the vendor-provided security patches and hotfixes for the affected versions, implementation of network segmentation to limit access to the Configuration utility, and enhanced monitoring of administrative access patterns. Organizations should also review their access control policies and ensure that only authorized personnel have administrative privileges to the Configuration utility. Additionally, implementing network-based intrusion detection systems to monitor for suspicious access patterns and establishing regular security audits of system logs can help detect potential exploitation attempts. The vulnerability demonstrates the critical importance of proper access control implementation and the potential consequences of insufficient privilege validation in enterprise security infrastructure, aligning with ATT&CK techniques related to privilege escalation and credential access through system configuration weaknesses.