{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-18T04:08:09.618","vulnerabilities":[{"cve":{"id":"CVE-2017-20002","sourceIdentifier":"cve@mitre.org","published":"2021-03-17T06:15:12.107","lastModified":"2024-11-21T03:22:25.583","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"The Debian shadow package before 1:4.5-1 for Shadow incorrectly lists pts/0 and pts/1 as physical terminals in /etc/securetty. This allows local users to login as password-less users even if they are connected by non-physical means such as SSH (hence bypassing PAM's nullok_secure configuration). This notably affects environments such as virtual machines automatically generated with a default blank root password, allowing all local users to escalate privileges."},{"lang":"es","value":"El paquete shadow de Debian versiones anteriores a 4.5-1 para Shadow, enumera incorrectamente pts/0 y pts/1 como terminales físicos en /etc/securetty. Esto permite a usuarios locales iniciar sesión como usuarios sin contraseña incluso si están conectados por medios no físicos como SSH (por lo tanto, omitiendo una configuración nullok_secure de PAM). Esto afecta notablemente a entornos como las máquinas virtuales generadas automáticamente con una contraseña root en blanco predeterminada, permitiendo a todos los usuarios locales escalar privilegios"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:P/A:P","baseScore":4.6,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":3.9,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-269"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:debian:shadow:4.4:*:*:*:*:*:*:*","matchCriteriaId":"C1317D10-D7BA-4A18-8667-7542A44A4989"},{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*","matchCriteriaId":"DEECE5FC-CACF-4496-A3E7-164736409252"}]}]}],"references":[{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374","source":"cve@mitre.org","tags":["Mailing List","Vendor Advisory"]},{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957","source":"cve@mitre.org","tags":["Exploit","Mailing List","Vendor Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html","source":"cve@mitre.org","tags":["Mailing List","Vendor Advisory"]},{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Vendor Advisory"]},{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Mailing List","Vendor Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Vendor Advisory"]}]}}]}