Horizon Alert
Summary of the vulnerability and why it matters
This vulnerability affects Portainer Community Edition. The flaw allows standard users with endpoint access to execute privileged plugin operations. This can create significant business risk by enabling unauthorized control over underlying containerized environments.
- Vulnerable: Portainer Community Edition endpoints
- Weakness: Unregistered plugin management endpoints
- Impact: Unauthorized plugin operations
Attack Path
How an attacker could exploit the issue
This vulnerability in Portainer Community Edition allows standard users with access to a Docker endpoint to perform privileged operations. Attackers can exploit this by installing or enabling Docker plugins, which could lead to unauthorized control over the underlying Docker daemon. This impact affects the integrity and availability of containerized environments managed by Portainer.
- Non-admin user has endpoint access.
- Attacker calls privileged plugin operations.
- Attacker gains control of Docker daemon.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability impacts organizations using specific versions of Portainer Community Edition for managing containerized applications. An attacker with standard user access to a Docker endpoint through Portainer could execute privileged plugin operations. This could lead to the installation and enablement of unauthorized plugins on the underlying Docker daemon, potentially allowing attackers to gain significant control over the affected systems and data. The ability for a non-administrator to perform these actions indicates a significant risk that warrants prompt attention.
- Standard user with endpoint access.
- Attacker could install unauthorized plugins.
- Business risk is high; treat as urgent.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Organizations utilizing Portainer Community Edition may face risks due to a vulnerability in the Docker plugin management endpoints. This issue allows standard users with endpoint access to execute privileged plugin operations, potentially impacting the underlying Docker daemon. The exposure occurs when non-administrative users are granted access to a Docker endpoint through Portainer's role-based access control.
- Identify Portainer instances with user access to Docker endpoints.
- Restrict non-admin user access to Docker endpoints.
- Apply vendor fixes, verify, and monitor.
