Microsoft PowerShell Core Server-Side Request Forgery

Executive Summary

This is a server-side request forgery (SSRF) vulnerability in Microsoft PowerShell Core. It allows an unauthorized attacker to make requests from the server to internal or external systems, potentially disclosing sensitive information over the network.

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Detection Guidance

Detecting SSRF in PowerShell Core requires monitoring network traffic and PowerShell command execution. Check PowerShell logs for unusual outbound requests to internal or external systems. Use network monitoring tools like Wireshark or tcpdump to inspect traffic originating from PowerShell processes. Look for unexpected connections to localhost, internal IP ranges, or suspicious domains.

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Impact Analysis

An attacker could exploit this to access internal network resources, retrieve sensitive data, or interact with systems the server can reach. This may lead to unauthorized information disclosure or further network compromise.

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Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating confidentiality requirements in GDPR and HIPAA. Organizations may face compliance violations, fines, or reputational damage if exploited.

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Mitigation Strategies

Apply the latest security updates from Microsoft to patch the SSRF vulnerability in PowerShell Core. Monitor network traffic for unusual outbound requests and restrict PowerShell usage where possible.

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