Server Side Request Forgery (SSRF) en SAP CRM y SAP S/4 HANA (Interaction Center)

The SSRF vulnerability in SAP CRM and S/4HANA allows an attacker to craft malicious requests that originate from the server itself. This bypasses typical network security controls, enabling access to internal resources that would normally be inaccessible from the outside. Successful exploitation could lead to the exposure of sensitive data stored on internal systems, such as configuration files, database credentials, or proprietary business information. While the vulnerability does not directly impact data integrity or availability, the confidentiality breach can have significant consequences, including compliance violations and reputational damage. The low privilege requirement makes this vulnerability particularly concerning, as it reduces the barrier to entry for potential attackers.

Organizations deploying SAP CRM and SAP S/4HANA (Interaction Center) with versions up to WEBCUIF 701 are at risk. This includes companies heavily reliant on these platforms for customer relationship management and internal communication. Shared hosting environments where multiple tenants share the same SAP instance are particularly vulnerable, as a compromise of one tenant could potentially lead to SSRF attacks targeting other tenants’ internal resources.

• sap: Review SAP system logs for unusual outbound network requests originating from the Interaction Center component. Look for requests to internal IP addresses or services.

# Example: Check SAP logs for requests to internal IP addresses
zgrep '192.168.1.' /opt/sap/your_sap_instance/log/system.log

• linux / server: Use ss or lsof to monitor outbound network connections from the SAP CRM/S/4HANA process. Filter for connections to internal IP addresses.

# Example: List all connections from the SAP CRM process
ss -p | grep sapcrm

• generic web: Examine access and error logs for requests containing suspicious URLs or internal IP addresses.

# Example: grep for requests to internal IPs in access logs
grep '192.168.1.' /var/log/apache2/access.log

1. 2025-03-11Disclosure

   disclosure

1. Reservado2025-02-25
2. Publicada2025-03-11
3. EPSS actualizado2026-04-02

The primary mitigation for CVE-2025-27430 is to upgrade to version 701.0.1 or later. Prior to upgrading, it's crucial to review SAP's official documentation for compatibility and potential breaking changes. If an immediate upgrade is not feasible, consider implementing temporary workarounds such as restricting outbound network access from the affected component using a Web Application Firewall (WAF) or proxy server. Configure the WAF to block requests to internal IP addresses or specific internal services. Regularly monitor system logs for suspicious outbound requests originating from the SAP CRM/S/4HANA component. After upgrading, confirm the fix by attempting to trigger the SSRF vulnerability and verifying that the request is blocked or redirected.