{"id":"ALPINE-CVE-2020-27780","details":"A flaw was found in Linux-Pam in versions prior to 1.5.1 in the way it handle empty passwords for non-existing users. When the user doesn't exist PAM try to authenticate with root and in the case of an empty password it successfully authenticate.","modified":"2026-09-11T10:17:51.424935660Z","published":"2020-12-18T00:15:14.330Z","upstream":["CVE-2020-27780"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2020-27780"}],"affected":[{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}},{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}},{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}},{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}},{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}},{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}},{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}},{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}},{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}},{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}},{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}},{"package":{"name":"linux-pam","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/linux-pam?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.5.0"},{"fixed":"1.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-27780.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}