{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2016-20021","sourceIdentifier":"cve@mitre.org","published":"2024-01-12T03:15:08.410","lastModified":"2026-06-17T00:43:06.160","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In Gentoo Portage before 3.0.47, there is missing PGP validation of executed code: the standalone emerge-webrsync downloads a .gpgsig file but does not perform signature verification. Unless emerge-webrsync is used, Portage is not vulnerable."},{"lang":"es","value":"En Gentoo Portage anterior a 3.0.47, falta la validación PGP del código ejecutado: el emerge-webrsync independiente descarga un archivo .gpgsig pero no realiza la verificación de firma."}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2025-05-09T23:34:49.198008Z","id":"CVE-2016-20021","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-347"}]},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-347"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:gentoo:portage:*:*:*:*:*:*:*:*","versionEndExcluding":"3.0.47","matchCriteriaId":"81332CB9-672C-4676-8772-069B22C5C40F"}]}]}],"references":[{"url":"https://bugs.gentoo.org/597800","source":"cve@mitre.org","tags":["Issue Tracking","Patch"]},{"url":"https://gitweb.gentoo.org/proj/portage.git/tree/NEWS","source":"cve@mitre.org","tags":["Release Notes"]},{"url":"https://wiki.gentoo.org/wiki/Portage","source":"cve@mitre.org","tags":["Product"]},{"url":"https://bugs.gentoo.org/597800","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Patch"]},{"url":"https://gitweb.gentoo.org/proj/portage.git/tree/NEWS","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Release Notes"]},{"url":"https://wiki.gentoo.org/wiki/Portage","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Product"]}]}}