{"id":"GHSA-w542-cpp9-r3g7","summary":"Field Test CSRF vulnerability","details":"The Field Test dashboard is vulnerable to cross-site request forgery (CSRF) with non-session based authentication methods in versions v0.2.0 through v0.3.2.\n\n## Impact\nThe Field Test dashboard is vulnerable to CSRF with non-session based authentication methods, like basic authentication. Session-based authentication methods (like Devise's default authentication) are not affected.\n\nA CSRF attack works by getting an authorized user to visit a malicious website and then performing requests on behalf of the user. In this instance, a single endpoint is affected, which allows for changing the variant assigned to a user.\n\nAll users running an affected release should upgrade immediately.\n\n## Technical Details\nField Test uses the `protect_from_forgery` method from Rails to prevent CSRF. However, this defaults to `:null_session`, which has no effect on non-session based authentication methods. This has been changed to `protect_from_forgery with: :exception`.","aliases":["CVE-2020-16252"],"modified":"2024-02-16T08:19:37.390564Z","published":"2020-08-05T14:53:34Z","database_specific":{"github_reviewed_at":"2020-08-05T14:47:06Z","nvd_published_at":null,"github_reviewed":true,"cwe_ids":["CWE-352"],"severity":"MODERATE"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-16252"},{"type":"WEB","url":"https://github.com/ankane/field_test/issues/28"},{"type":"WEB","url":"https://github.com/ankane/field_test/commit/defd3fdf457c22d7dc5b3be7048481947bd5f0d0"},{"type":"PACKAGE","url":"https://github.com/ankane/field_test"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/field_test/CVE-2020-16252.yml"}],"affected":[{"package":{"name":"field_test","ecosystem":"RubyGems","purl":"pkg:gem/field_test"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.2.0"},{"fixed":"0.4.0"}]}],"versions":["0.2.0","0.2.1","0.2.2","0.2.3","0.2.4","0.3.0","0.3.1","0.3.2"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/08/GHSA-w542-cpp9-r3g7/GHSA-w542-cpp9-r3g7.json","last_known_affected_version_range":"\u003c= 0.3.2"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"}]}