CVE-2020-5216
Last modified
CVE-2020-5216 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. 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. EPSS estimates a 1.08% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Secure Headers | < 3.9.0 | |
| Secure Headers | >= 5.0.0, < 5.2.0 | |
| Secure Headers | >= 6.0.0, < 6.3.0 |
References
- https://github.com/twitter/secure_headers/security/advisories/GHSA-w978-rmpf-qmwgExploit, Mitigation, Third Party Advisory
- https://github.com/twitter/secure_headers/security/advisories/GHSA-w978-rmpf-qmwgExploit, Mitigation, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-5216?
How severe is CVE-2020-5216?
How do I fix CVE-2020-5216?
Are you affected by CVE-2020-5216?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST