CVE-2024-38206 is a high-severity Server-Side Request Forgery (SSRF) vulnerability identified in Microsoft Copilot Studio, a product by Microsoft. SSRF vulnerabilities occur when an attacker can manipulate a server to make unauthorized requests to internal or external resources, potentially bypassing network protections. In this case, the vulnerability allows an authenticated attacker to bypass existing SSRF protections within Microsoft Copilot Studio, enabling them to craft requests that the server processes on their behalf. This can lead to the leakage of sensitive information over the network. The vulnerability is classified under CWE-918, which specifically relates to SSRF issues. The CVSS v3.1 base score is 8.5, indicating a high severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N/E:U/RL:O/RC:C) shows that the attack can be performed remotely over the network (AV:N) with low attack complexity (AC:L), requires privileges (PR:L) but no user interaction (UI:N). The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. Confidentiality impact is high (C:H), integrity impact is low (I:L), and availability impact is none (A:N). The exploitability is currently unknown with no known exploits in the wild. No specific affected versions are listed, but the vulnerability is confirmed in Microsoft Copilot Studio. The vulnerability was reserved in June 2024 and published in August 2024. This SSRF flaw could allow attackers to access internal services or sensitive data that should be protected behind firewalls or network segmentation, potentially leading to data breaches or further exploitation within an organization's network.

For European organizations, the impact of this SSRF vulnerability in Microsoft Copilot Studio can be significant, especially for enterprises relying on this product for AI-driven development or automation workflows. The high confidentiality impact means sensitive internal data or configuration details could be exposed to attackers, potentially including intellectual property, customer data, or internal network topology. Since the vulnerability requires authentication but no user interaction, attackers who have compromised or obtained valid credentials could exploit this flaw to escalate their access or move laterally within the network. This could lead to data leakage, compliance violations (e.g., GDPR breaches), and reputational damage. The changed scope indicates that the attack could affect other components or services beyond Copilot Studio itself, increasing the risk of broader compromise. Given the critical role Microsoft products often play in European enterprises and public sector organizations, exploitation could disrupt business operations or expose sensitive government or corporate data. Additionally, the lack of known exploits currently provides a window for mitigation, but organizations should act promptly to reduce risk.

1. Immediate mitigation should include restricting access to Microsoft Copilot Studio to only trusted and necessary users, enforcing strong authentication and monitoring for unusual access patterns. 2. Network segmentation should be reviewed and enforced to limit the ability of Copilot Studio to make arbitrary network requests, especially to internal services that do not need to be accessed by this product. 3. Implement strict egress filtering and firewall rules to control outbound requests from the Copilot Studio environment, minimizing the attack surface for SSRF exploitation. 4. Monitor logs and network traffic for anomalous requests originating from Copilot Studio that could indicate SSRF attempts. 5. Apply the official security patches or updates from Microsoft as soon as they become available; in the absence of patches, consider temporary disabling or limiting the use of affected features. 6. Conduct internal security assessments and penetration tests focusing on SSRF vectors within Copilot Studio deployments. 7. Educate administrators and users about the risks of SSRF and the importance of credential security since authentication is required for exploitation. 8. Coordinate with Microsoft support and stay updated on advisories related to this vulnerability for any new mitigation guidance or exploit information.