In Secure Headers (RubyGem secure_headers), a directive injection vulnerability is present in versions before 3.8.0, 5.1.0, and 6.2.0. If user-supplied input was passed into append/override_content_security_policy_directives, a semicolon could be injected leading to directive injection. This could be used to e.g. override a script-src directive. Duplicate directives are ignored and the first one wins. The directives in secure_headers are sorted alphabetically so they pretty much all come before script-src. A previously undefined directive would receive a value even if SecureHeaders::OPT_OUT was supplied. The fixed versions will silently convert the semicolons to spaces and emit a deprecation warning when this happens. This will result in innocuous browser console messages if being exploited/accidentally used. In future releases, we will raise application errors resulting in 500s. Depending on what major version you are using, the fixed versions are 6.2.0, 5.1.0, 3.8.0.
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cve-icon MITRE Information

Status: PUBLISHED

Assigner: GitHub_M

Published: 2020-01-23T02:15:17

Updated: 2020-01-23T02:15:17

Reserved: 2020-01-02T00:00:00


Link: CVE-2020-5217

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2020-01-23T03:15:10.793

Modified: 2020-05-21T13:51:17.810


Link: CVE-2020-5217

JSON object: View

cve-icon Redhat Information

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