Horizon Alert
Summary of the vulnerability and why it matters
This advisory concerns a critical vulnerability within the OneUptime monitoring platform, specifically allowing authenticated users with limited privileges to execute arbitrary commands on the system. This could potentially lead to unauthorized access and control over the affected infrastructure.
- Allows limited users to run any command.
- Affects systems managing critical infrastructure.
- Confirm relevance; critical systems warrant attention.
Attack Path
How an attacker could exploit the issue
An attacker with project member privileges can execute arbitrary commands on the server by creating a specially crafted synthetic monitor. This monitor leverages an incomplete sandbox that fails to block access to critical Playwright objects, allowing the attacker to bypass restrictions and launch processes on the Probe container.
- Requires authenticated access.
- Abuse Playwright script execution.
- Remote command execution risk.
Live Threat
Current exploitation, exposure, and threat context
A low-privileged authenticated user could execute arbitrary commands on the Probe container or host. This is possible by exploiting an incomplete sandbox when running synthetic monitor scripts, allowing the user to bypass restrictions and launch unintended processes.
- System access and arbitrary code execution.
- Abuse of synthetic monitor script execution.
- Compromised monitoring infrastructure.
Operational Fix
Recommended remediation, mitigation, and detection steps
The OneUptime platform, used for monitoring and observability, is likely managed by platform or application teams. The first practical step is to identify all OneUptime deployments, assess their reachability and business criticality, and confirm the accountable owner. Subsequently, a remediation plan should be developed based on the identified risks.
- Platform or application teams own this.
- Verify OneUptime deployment reachability.
- Plan remediation based on risk.
