CVE-2018-2380: SAP Customer Relationship Management (CRM) Path Traversal Vulnerability

CVE-2018-2380 is a path traversal weakness in SAP Customer Relationship Management (CRM). Insufficient validation of user-supplied path information can let an attacker reach files or locations outside the intended scope. CISA notes known ransomware use of this vulnerability, so unpatched CRM instances that handle customer and business data deserve prompt attention.

Defenders should treat this as a high-priority inventory and patching task. Confirm exact affected components, versions, and fixes only against the vendor advisory; do not rely on secondary summaries alone.

How it works

This issue is classed as CWE-22 (path traversal). In products of this type, the application accepts path or filename input from a user or client and uses it when accessing the filesystem or related resources. When that input is not fully canonicalized and constrained to an allowed base directory, an attacker can craft sequences (for example, directory-ascent patterns) that cause the application to resolve a path outside the intended area.

Abuse typically means sending specially formed requests that supply malicious path information to a vulnerable CRM interface or service. Successful exploitation can lead to unauthorized read or write of files the CRM process can access, depending on how the product uses the path and on the privileges of the service account. Exact request format, parameters, and impact vary by component; treat any public proof-of-concept as untrusted and validate behavior only in a controlled lab against vendor documentation.

Am I affected? How to find it in your systems

SAP CRM is commonly deployed in enterprise environments that manage customer data, sales, and service processes—on-premises or in hosted landscapes that still run the CRM application stack. Inventory every system that runs SAP CRM or related CRM application servers, including non-production and integration hosts that may be reachable from less-trusted networks.

• Build or refresh an asset list from SAP system IDs, landscape directories, CMDB entries, and software inventory tools that report SAP components.
• Map which hosts expose CRM-related web or application interfaces, and note authentication boundaries and network placement.
• Compare installed component versions and support packages to the list in the official SAP security advisory for CVE-2018-2380; only the vendor list is authoritative.
• Review configuration for any features that accept file paths, uploads, exports, or document references from users or remote systems—these are the usual surfaces for path traversal in this class.
• For exploitation signs, inspect application and web-tier logs for unusual path strings, repeated access to sensitive filesystem locations, or errors that indicate path resolution outside expected directories. Correlate with authentication logs and outbound connections from CRM hosts. Absence of obvious log noise does not prove safety if logging is incomplete.

How to remediate

Patch first. Apply the updates SAP provides for this vulnerability exactly as described in the vendor advisory and in line with CISA’s required action to apply updates per vendor instructions. Use your normal SAP transport and change-management process so that dependent systems stay consistent.

• After patching, verify the advisory’s listed components show the fixed level and retest any CRM functions that handle paths or documents.
• Harden generally for this weakness class: run CRM services with least privilege; restrict filesystem permissions so the application account cannot read or write unrelated directories; disable unused file-related or document interfaces; and ensure path handling (if configurable) enforces a strict allowlist root.
• Reduce exposure of CRM admin and integration endpoints to the internet or broad internal networks; place them behind strong authentication and network controls.

If you can't patch immediately

Until the vendor update is installed, reduce likelihood and impact with compensating controls.

• Segment CRM hosts so only required clients and integration systems can reach vulnerable interfaces; block direct internet access where it is not essential.
• If you use a WAF or reverse proxy in front of CRM web interfaces, apply virtual-patching rules that reject obvious path-traversal patterns in parameters and URLs—tune carefully to avoid breaking legitimate document features, and treat this as temporary.
• Disable or restrict any optional CRM features that accept user-controlled path or file references if business operations allow it.
• Increase monitoring: alert on anomalous path strings, unexpected file access by the CRM process, and new or unusual outbound connections from CRM servers. Preserve logs for incident response.
• Enforce strict identity controls (MFA, limited admin accounts) so that any partial compromise is harder to expand.

If your data may have been exposed

Vulnerabilities with known ransomware use are frequently chained into broader intrusion and data theft. If CRM systems were unpatched and reachable during a relevant window, assume possible unauthorized access to data the application could read, investigate with your IR process, and follow legal and regulatory notification duties where they apply. You can run a free exposure scan of your email addresses against known breach data as one quick check for credentials or identities that may already appear in public breach sets, then prioritize password resets and monitoring for those accounts.