CVE-2020-5216
4.4 · MEDIUMOverview
CVE-2020-5216 is a medium-severity vulnerability affecting twitter secure_headers. It was published on January 23, 2020 and has a CVSS 3.1 base score of 4.4 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
In Secure Headers (RubyGem secure_headers), a directive injection vulnerability is present in versions before 3.9.0, 5.2.0, and 6.3.0. If user-supplied input was passed into append/override_content_security_policy_directives, a newline could be injected leading to limited header injection. Upon seeing a newline in the header, rails will silently create a new Content-Security-Policy header with the remaining value of the original string. It will continue to create new headers for each newline. This has been fixed in 6.3.0, 5.2.0, and 3.9.0.
Remediation
Check the references section for vendor advisories and patches from twitter. Update secure_headers 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 |
|---|---|---|---|
| secure_headers | >= 0, < 3.9.0 | Affected |
References
Frequently Asked Questions
What is CVE-2020-5216?
CVE-2020-5216 is a medium-severity vulnerability affecting twitter secure_headers. It was published on January 23, 2020 and has a CVSS 3.1 base score of 4.4 (MEDIUM).
How severe is CVE-2020-5216?
This vulnerability has a CVSS 3.1 base score of 4.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2020-5216?
Check the references section for vendor advisories and patches from twitter. Update secure_headers 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-2020-5216?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-5216 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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