Horizon Alert
Summary of the vulnerability and why it matters
A vulnerability has been identified in OneUptime, a platform for monitoring and managing online services, affecting versions prior to 10.0.21. This issue could allow a low-privileged user to bypass security controls, leading to unauthorized access to other tenants' data, exposure of sensitive user information, and potentially full account takeover. The main concern is confirming relevance and exposure.
- Unauthorized access to sensitive customer data.
- Affects OneUptime, a critical service management tool.
- Assess OneUptime exposure and potential data impact.
Attack Path
How an attacker could exploit the issue
An attacker with low-level access could exploit this vulnerability by sending specially crafted headers to the OneUptime server. This bypasses security checks, allowing the attacker to access and manipulate data across different tenants, including sensitive user information and password reset tokens, ultimately leading to account takeover.
- Requires low-privileged access.
- Triggers by sending forged headers.
- Risks cross-tenant data exposure and account takeover.
Live Threat
Current exploitation, exposure, and threat context
A low-privileged user could bypass authorization and tenant isolation. This may allow access to project data belonging to other tenants, read sensitive user fields, leak reset password tokens, and reset a victim's password, leading to account takeover when supported by the advisory.
- Cross-tenant project data exposure.
- Bypassing authorization with forged headers.
- Full account takeover possible.
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability affects OneUptime deployments, likely managed by platform or application teams responsible for online service monitoring. The immediate priority is to identify all OneUptime instances, assess their exposure and business criticality, locate the accountable owner for each, and then plan remediation based on the identified risk.
- Platform or application teams own the issue.
- Verify OneUptime instance exposure and criticality.
- Plan and execute remediation during maintenance.
