Source: cve@mitre.org
The HTTP interface of Tivoli Lightweight Client Framework (LCF) in IBM Tivoli Management Framework 3.7.1 sets http_disable to zero at install time, which allows remote authenticated users to bypass file permissions on Tivoli Endpoint Configuration data files via an unspecified manipulation of log files.
IBM Tivoli Management Framework 3.7.1 is vulnerable to a critical flaw allowing authenticated users to bypass file permissions and potentially gain unauthorized access to sensitive configuration data. This vulnerability stems from an insecure configuration of the HTTP interface, enabling manipulation of log files to compromise the integrity of the endpoint configuration. Successful exploitation could lead to data breaches and system compromise.
Step 1: Authentication: An attacker gains valid credentials for an authenticated user on the Tivoli Management Framework 3.7.1 system. This could be through credential harvesting, social engineering, or other means.
Step 2: Log File Manipulation: The attacker identifies the location and format of the log files used by the Tivoli Endpoint Configuration system. They then craft a malicious payload designed to exploit a vulnerability in how the system processes these log files.
Step 3: Payload Injection: The attacker injects the crafted payload into the log files, potentially through the HTTP interface, leveraging the enabled HTTP interface and the lack of proper file permission checks.
Step 4: Configuration Data Access: The attacker leverages the manipulated log files to bypass file permissions and gain access to or modify sensitive Tivoli Endpoint Configuration data files. This could involve reading, writing, or executing commands based on the configuration data.
The root cause lies in the improper configuration of the HTTP interface within the Tivoli Lightweight Client Framework (LCF). Specifically, the http_disable flag is set to zero during installation, enabling the HTTP interface by default. This, combined with a flaw in how the system handles log file access and permissions for Tivoli Endpoint Configuration data files, allows authenticated users to manipulate log files. The vulnerability doesn't specify the exact mechanism of manipulation, but it implies a weakness in how the system validates access to these configuration files via the HTTP interface. This could involve, for example, a path traversal vulnerability, a format string bug, or a command injection vulnerability within the log file processing logic. The lack of proper input validation and authorization checks on the HTTP interface allows an attacker to potentially overwrite or read sensitive configuration data.
Due to the age of the vulnerability and the lack of specific details, it is difficult to attribute it to specific APT groups. However, any group targeting enterprise environments could potentially exploit this vulnerability. CISA KEV status: Not listed.
Monitor HTTP traffic for suspicious activity, such as unusual file access patterns or attempts to access configuration files.
Analyze log files for anomalous entries, especially those related to file access, modification, or deletion within the Tivoli Endpoint Configuration directory.
Implement file integrity monitoring to detect unauthorized changes to configuration files.
Review authentication logs for suspicious activity, such as multiple failed login attempts or unusual user behavior.
Network Intrusion Detection Systems (NIDS) should be configured to flag suspicious HTTP requests targeting the Tivoli Management Framework.
Upgrade to a patched version of IBM Tivoli Management Framework that addresses the vulnerability. If upgrading is not possible, apply the latest security patches.
Disable the HTTP interface if it is not required for operation. If it is required, ensure it is configured securely.
Implement strong access controls and file permissions on configuration files, restricting access to only authorized users and processes.
Implement robust input validation and sanitization to prevent log file manipulation.
Regularly review and audit log files for suspicious activity.
Implement a Web Application Firewall (WAF) to filter malicious HTTP requests.