Vulnerability in Twitter Secure Headers
CVE-2020-5216
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.
EPSS: 0.011 (61.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Twitter Secure_headers — versions < 3.9.0, >= 5.0.0, < 5.2.0, >= 6.0.0, < 6.3.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory, Mitigation)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-5216?
- CVE-2020-5216 is a medium-severity vulnerability in Twitter Secure Headers, classified under HTTP Response Splitting. CVSS score: 4.4/10. Published 2020-01-23.
- How severe is CVE-2020-5216?
- Medium severity. CVSS v3 base score is 4.4 out of 10.