Provectus kafka-ui is a user interface for managing Apache Kafka clusters. It is designed for developers and system administrators to interact with Kafka ecosystems. The software provides various tools for visualizing, monitoring, and administrating Kafka operations. Used in various industries, it helps manage Kafka topics, consumers, and configurations seamlessly. Its visual nature aims at simplifying the Kafka management tasks, making it a valuable tool especially for large cluster operations. Despite being useful, without sufficient security measures, it may face vulnerability issues.
This scanner detects a Remote Code Execution vulnerability in Provectus kafka-ui. This vulnerability arises from improper handling of the `filterCode` parameter in the `/api/smartfilters/testexecutions` endpoint. Attackers can exploit this by injecting arbitrary code without authentication, leading to a complete system compromise. The vulnerable code is evaluated as a Groovy expression and lacks necessary sandboxing constraints, enhancing the risk factor. Due to its critical severity, this security flaw necessitates urgent attention to mitigate potential threats. Exploiting this flaw could lead to unauthorized control over the host and its connected Kafka clusters.
The vulnerability is present in the `/api/smartfilters/testexecutions` endpoint. The `filterCode` parameter accepts Groovy expressions, which are executed without necessary sandboxing or checks. By sending crafted requests, malicious actors can exploit this input to execute any code on the hosting server. The request utilizes the "PUT" method to carry the payload, and upon successful execution, attackers gain system-level control. This is identifiable through specific markers in the response body, which indicate command execution proofs like user ID details. The absence of authentication in execution allows such intrusion without much effort.
When malicious individuals exploit the vulnerability, it results in remote code execution, granting attackers unauthorized access. This could lead to data breaches, unauthorized data amendments, or deletion operations. Critical system functionalities and connected Kafka clusters might be controlled or reconfigured by attackers. This level of unauthorized access could also facilitate other attacks, such as data theft, privilege escalation, or creating backdoors. Vulnerable systems may be used to further more extensive and damaging cyber operations, thus leading to significant legal and business risks for affected organizations.
REFERENCES
- Immediately restrict access to the vulnerable endpoint by implementing network-level access controls.
- Deploy authentication mechanisms for access control in the kafka-ui interface.
- Consider migrating to the maintained kafbat/kafka-ui fork for better support and security updates.
- Regularly monitor and audit server logs for unusual activities indicating attempts to exploit this vulnerability.
- Implement web application firewalls to detect and block malicious request patterns.
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