{"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":"2025-12-03T22:49:13.781420Z","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":"0"},{"fixed":"1.5.1"}]}],"versions":["1.1.3-r0","1.1.3-r1","1.1.3-r2","1.1.3-r3","1.1.3-r4","1.1.5-r0","1.1.6-r0","1.1.8-r0","1.1.8-r1","1.1.8-r2","1.2.0-r0","1.2.1-r0","1.2.1-r1","1.3.0-r0","1.3.0-r1","1.3.1-r0","1.3.1-r1","1.3.1-r2","1.3.1-r3","1.3.1-r4","1.4.0-r0","1.4.0-r1"],"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":"0"},{"fixed":"1.5.1-r0"}]}],"versions":["1.1.3-r0","1.1.3-r1","1.1.3-r2","1.1.3-r3","1.1.3-r4","1.1.5-r0","1.1.6-r0","1.1.8-r0","1.1.8-r1","1.1.8-r2","1.2.0-r0","1.2.1-r0","1.2.1-r1","1.3.0-r0","1.3.0-r1","1.3.1-r0","1.3.1-r1","1.3.1-r2","1.3.1-r3","1.3.1-r4","1.4.0-r0","1.4.0-r1"],"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":"0"},{"fixed":"1.5.1-r0"}]}],"versions":["1.1.3-r0","1.1.3-r1","1.1.3-r2","1.1.3-r3","1.1.3-r4","1.1.5-r0","1.1.6-r0","1.1.8-r0","1.1.8-r1","1.1.8-r2","1.2.0-r0","1.2.1-r0","1.2.1-r1","1.3.0-r0","1.3.0-r1","1.3.1-r0","1.3.1-r1","1.3.1-r2","1.3.1-r3","1.3.1-r4","1.4.0-r0","1.4.0-r1"],"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":"0"},{"fixed":"1.5.1-r0"}]}],"versions":["1.1.3-r0","1.1.3-r1","1.1.3-r2","1.1.3-r3","1.1.3-r4","1.1.5-r0","1.1.6-r0","1.1.8-r0","1.1.8-r1","1.1.8-r2","1.2.0-r0","1.2.1-r0","1.2.1-r1","1.3.0-r0","1.3.0-r1","1.3.1-r0","1.3.1-r1","1.3.1-r2","1.3.1-r3","1.3.1-r4","1.4.0-r0","1.4.0-r1"],"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":"0"},{"fixed":"1.5.1-r0"}]}],"versions":["1.1.3-r0","1.1.3-r1","1.1.3-r2","1.1.3-r3","1.1.3-r4","1.1.5-r0","1.1.6-r0","1.1.8-r0","1.1.8-r1","1.1.8-r2","1.2.0-r0","1.2.1-r0","1.2.1-r1","1.3.0-r0","1.3.0-r1","1.3.1-r0","1.3.1-r1","1.3.1-r2","1.3.1-r3","1.3.1-r4","1.4.0-r0","1.4.0-r1"],"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":"0"},{"fixed":"1.5.1-r0"}]}],"versions":["1.1.3-r0","1.1.3-r1","1.1.3-r2","1.1.3-r3","1.1.3-r4","1.1.5-r0","1.1.6-r0","1.1.8-r0","1.1.8-r1","1.1.8-r2","1.2.0-r0","1.2.1-r0","1.2.1-r1","1.3.0-r0","1.3.0-r1","1.3.1-r0","1.3.1-r1","1.3.1-r2","1.3.1-r3","1.3.1-r4","1.4.0-r0","1.4.0-r1"],"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":"0"},{"fixed":"1.5.1-r0"}]}],"versions":["1.1.3-r0","1.1.3-r1","1.1.3-r2","1.1.3-r3","1.1.3-r4","1.1.5-r0","1.1.6-r0","1.1.8-r0","1.1.8-r1","1.1.8-r2","1.2.0-r0","1.2.1-r0","1.2.1-r1","1.3.0-r0","1.3.0-r1","1.3.1-r0","1.3.1-r1","1.3.1-r2","1.3.1-r3","1.3.1-r4","1.4.0-r0","1.4.0-r1"],"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":"0"},{"fixed":"1.5.1-r0"}]}],"versions":["1.1.3-r0","1.1.3-r1","1.1.3-r2","1.1.3-r3","1.1.3-r4","1.1.5-r0","1.1.6-r0","1.1.8-r0","1.1.8-r1","1.1.8-r2","1.2.0-r0","1.2.1-r0","1.2.1-r1","1.3.0-r0","1.3.0-r1","1.3.1-r0","1.3.1-r1","1.3.1-r2","1.3.1-r3","1.3.1-r4","1.4.0-r0","1.4.0-r1"],"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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