Horizon Alert
Summary of the vulnerability and why it matters
A critical vulnerability in Microsoft Power Automate allows an authenticated user to potentially elevate their privileges across the network through a server-side request forgery flaw. This means an attacker with some access could trick the system into making requests on their behalf, potentially leading to unauthorized actions. The main concern is confirming the relevance and exposure of this issue within our environment.
- Attackers can misuse automation features.
- Limits access, enabling broader system compromise.
- Confirm if our automation services are exposed.
Attack Path
How an attacker could exploit the issue
An attacker could exploit this vulnerability by sending a specially crafted request to Power Automate, leveraging their existing authorized access. This would cause Power Automate to make a request to an unintended location, potentially allowing the attacker to gain elevated privileges within the system or access sensitive information.
- Requires authorized access.
- Triggered by a crafted network request.
- Risk of privilege escalation and data access.
Live Threat
Current exploitation, exposure, and threat context
A server-side request forgery vulnerability in Power Automate could allow an authenticated attacker to elevate privileges over a network, potentially impacting the confidentiality, integrity, and availability of connected services and data. This could occur when the Power Automate service makes requests to unauthorized network resources on behalf of the attacker.
- Connected services and data.
- Forged network requests by an attacker.
- Privilege escalation and unauthorized access.
Operational Fix
Recommended remediation, mitigation, and detection steps
Server-side request forgery in Power Automate requires immediate attention from teams managing cloud applications and their underlying infrastructure. The first step is to locate all instances of Power Automate within your environment, assess their exposure and criticality, and identify the accountable system owners to prioritize remediation efforts.
- Application and platform teams own the issue.
- Verify Power Automate instance exposure and criticality.
- Coordinate risk-based remediation planning.
