CVE-2017-6921
5.9 · MEDIUMOverview
CVE-2017-6921 is a medium-severity vulnerability affecting drupal drupal. It was published on January 15, 2019 and has a CVSS 3.0 base score of 5.9 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In Drupal 8 prior to 8.3.4; The file REST resource does not properly validate some fields when manipulating files. A site is only affected by this if the site has the RESTful Web Services (rest) module enabled, the file REST resource is enabled and allows PATCH requests, and an attacker can get or register a user account on the site with permissions to upload files and to modify the file resource.
Remediation
Check the references section for vendor advisories and patches from drupal. Update drupal to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| drupal | drupal | >= 8.0.0, < 8.3.4 | Affected |
References
Frequently Asked Questions
What is CVE-2017-6921?
CVE-2017-6921 is a medium-severity vulnerability affecting drupal drupal. It was published on January 15, 2019 and has a CVSS 3.0 base score of 5.9 (MEDIUM).
How severe is CVE-2017-6921?
This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2017-6921?
Check the references section for vendor advisories and patches from drupal. Update drupal to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2017-6921?
CyberStrike's AI-powered security agents can automatically detect CVE-2017-6921 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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