{"id":"GHSA-4f68-49qq-h392","summary":"Improper certificate validation in em-imap","details":"em-imap 0.5 and earlier use the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified.","aliases":["CVE-2020-13163"],"modified":"2023-11-01T04:51:39.208459Z","published":"2021-05-24T18:12:20Z","database_specific":{"nvd_published_at":"2020-05-19T22:15:00Z","cwe_ids":["CWE-295"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2021-05-20T22:25:15Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13163"},{"type":"WEB","url":"https://github.com/ConradIrwin/em-imap/issues/25"},{"type":"PACKAGE","url":"https://github.com/ConradIrwin/em-imap"},{"type":"ADVISORY","url":"https://securitylab.github.com/advisories/GHSL-2020-095-conradirwin-em-imap"}],"affected":[{"package":{"name":"em-imap","ecosystem":"RubyGems","purl":"pkg:gem/em-imap"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.5"}]}],"versions":["0.1","0.1.1","0.2","0.2.1","0.2.2","0.3.0","0.4.0","0.4.1","0.5"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/05/GHSA-4f68-49qq-h392/GHSA-4f68-49qq-h392.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}