Docker-Proxy is a software that serves as a middleman for managing network communications between Docker containers and external networks. Organizations and developers use it to facilitate and streamline communication, allowing containers to interact with other systems or the internet. Its flexibility and ease of configuration make it a popular choice for DevOps teams aiming to create scalable and robust containerized environments. The tool allows for the integration of various monitoring and alerting services through configuration endpoints. However, ensuring secured communication and endpoints is crucial to maintaining data integrity and confidentiality.
The Missing Authorization vulnerability detected in the Docker-Proxy arises from inadequate access controls on certain endpoints. Specifically, the "/api/config" endpoint lacks proper authentication checks, allowing unauthorized access. An attacker can exploit this by reading sensitive configuration details, including webhook URLs and bot tokens. Additionally, the attacker can modify server configurations due to the absence of authentication protocols. This lack of authorization poses a significant threat, given the sensitive nature of the data exposed and the potential for system manipulation.
In technical terms, the vulnerability occurs due to missing authentication checks on the "/api/config" endpoint, leading to unauthorized access and potential data tampering. The vulnerable parameters include configuration settings, which can be overwritten or read by anyone familiar with the endpoint URL. The application's HTTP request uses the path "/api/config" and is accessible without credentials, resulting in exposure of "monitoringConfig" and "menuItems". Ensuring endpoint protection and proper session management could mitigate such issues.
The exploitation of this vulnerability can result in significant impacts, such as unauthorized access to sensitive information, including communication tokens and webhook URLs. Malicious actors might use this information for further attacks, leading to data leaks or system downtime. Moreover, the ability to overwrite configuration settings can disrupt standard operations, potentially leading to system inconsistencies or vulnerabilities in the Docker setup. This could have broader implications, affecting organizational productivity and infrastructure security.
REFERENCES
- https://github.com/dqzboy/Docker-Proxy/security/advisories/GHSA-xxpq-v3jg-w39m
- https://github.com/dqzboy/Docker-Proxy/commit/a173befc5d163b1206b40298871153026fee9474
- https://github.com/dqzboy/Docker-Proxy/issues/109
- https://www.vulncheck.com/advisories/docker-proxy-through-5.1.9-missing-authentication-via-hubcmdui-api-config
- https://nvd.nist.gov/vuln/detail/CVE-2026-116070
- Upgrade Docker-Proxy to a version beyond 5.1.9 to ensure that anonymous access is restricted.
- Implement stringent access controls on the "/api/config" endpoint.
- Consider employing rate-limiting to prevent brute-force attacks on unauthenticated endpoints.
- Regularly audit server configurations to identify potential unauthorized changes.
- Ensure secure coding practices are adhered to in all endpoint configurations.
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