CVE-2024-46938: Sitecore Commerce File Disclosure Flaw

CVE-2024-46938 Overview

CVE-2024-46938 is an unauthenticated arbitrary file read vulnerability affecting Sitecore Experience Platform (XP), Experience Manager (XM), and Experience Commerce (XC). Versions from 8.0 Initial Release through 10.4 Initial Release are affected. An attacker with network access to the Sitecore application can read arbitrary files from the server without authentication. The flaw is tracked under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.

The EPSS score of 93.43% (99.8 percentile) indicates an elevated likelihood of exploitation activity in the near term.

Critical Impact

Remote unauthenticated attackers can retrieve sensitive files such as configuration data, connection strings, and credentials from affected Sitecore deployments.

Affected Products

• Sitecore Experience Platform (XP) 8.0 Initial Release through 10.4 Initial Release
• Sitecore Experience Manager (XM) 8.0 Initial Release through 10.4 Initial Release
• Sitecore Experience Commerce (XC) 8.0 Initial Release through 10.4 Initial Release

Discovery Timeline

• 2024-09-15 - CVE-2024-46938 published to NVD
• 2024-09-20 - Last updated in NVD database

Technical Details for CVE-2024-46938

Vulnerability Analysis

The vulnerability allows an unauthenticated remote attacker to read arbitrary files from the Sitecore server filesystem. Sitecore is a widely deployed enterprise digital experience platform built on ASP.NET. Files retrievable through this flaw typically include web.config, connection strings, license files, log files, and source code under the application root.

Exposure of these files often provides an attacker with secondary footholds. Database connection strings, API keys, and machine keys recovered from configuration files can enable lateral movement, authentication bypass, and ViewState deserialization attacks against the underlying ASP.NET infrastructure.

Sitecore has published technical details and remediation in the vendor advisory. See the Sitecore Knowledge Base Article (KB1003408) for vendor-confirmed information.

Root Cause

The root cause is improper validation of user-supplied input in a file-serving code path within the Sitecore web application. The server resolves a request parameter to a filesystem path without sufficient canonicalization or access control. This allows path traversal sequences or absolute paths to reference files outside the intended directory.

Attack Vector

Exploitation requires only network access to the Sitecore HTTP endpoint. No authentication, user interaction, or special privileges are needed. An attacker crafts an HTTP request targeting the vulnerable handler and supplies a path parameter referencing a sensitive file. The server returns the file contents in the HTTP response.

No verified public proof-of-concept code has been released for CVE-2024-46938. Refer to the Sitecore advisory for technical specifics.

Detection Methods for CVE-2024-46938

Indicators of Compromise

• HTTP requests containing path traversal sequences such as ../, ..%2f, or absolute paths in query parameters targeting Sitecore endpoints
• Unexpected outbound transfers of web.config, ConnectionStrings.config, or files under /App_Config/ from Sitecore servers
• Access patterns from a single source IP enumerating multiple file paths against the Sitecore application

Detection Strategies

• Inspect IIS and Sitecore application logs for anomalous requests to file-handling endpoints with suspicious path parameters
• Deploy web application firewall rules that block path traversal patterns in request parameters reaching Sitecore endpoints
• Correlate file-read response patterns with response sizes typical of web.config or .dll content disclosure

Monitoring Recommendations

• Alert on HTTP 200 responses returning configuration file content types from Sitecore servers to external sources
• Track high-volume sequential requests from a single client targeting differing file paths within short time windows
• Forward IIS logs and Sitecore logs to a centralized SIEM for retention and behavioral analysis

How to Mitigate CVE-2024-46938

Immediate Actions Required

• Apply the patches and configuration changes documented in Sitecore KB1003408 for all affected XP, XM, and XC instances
• Restrict network exposure of Sitecore administrative and content delivery endpoints to trusted networks only
• Rotate any credentials, connection strings, machine keys, and API tokens that may have been exposed in configuration files

Patch Information

Sitecore has published remediation guidance covering versions 8.0 Initial Release through 10.4 Initial Release. Administrators should reference the Sitecore Knowledge Base Article KB1003408 for version-specific hotfixes and instructions.

Workarounds

• Place Sitecore behind a reverse proxy or WAF configured to block path traversal sequences and reject requests for sensitive file extensions
• Enforce strict IIS request filtering rules to deny URL segments containing .., encoded traversal sequences, and direct references to App_Config paths
• Limit filesystem permissions on the Sitecore application identity to restrict the scope of files readable by the web process

# IIS Request Filtering example to block traversal sequences
# web.config under <system.webServer>
<security>
  <requestFiltering>
    <denyUrlSequences>
      <add sequence=".." />
      <add sequence="%2e%2e" />
      <add sequence="App_Config" />
    </denyUrlSequences>
  </requestFiltering>
</security>