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.
| Reporter | Title | Published | Views | Family All 32 |
|---|---|---|---|---|
 | CVE-2020-27780 | 17 Dec 202023:55 | – | alpinelinux |
 | [ASA-202012-13] pam: authentication bypass | 9 Dec 202000:00 | – | archlinux |
 | CVE-2020-27780 affecting package pam 1.3.1-4 | 19 Mar 202216:40 | – | cbl_mariner |
 | Rocky Linux 9.2 [CIQ] Security Update: pam / pam-debuginfo / pam-debugsource / pam-devel / pam-docs Multiple Vulnerabilities (ciqsa-2026_0473) | 1 Oct 202600:00 | – | nessus |
| Fedora 33 : pam (2020-22532a1a81) | 30 Nov 202000:00 | – | nessus |
| Fedora 32 : pam (2020-bd83344365) | 11 Dec 202000:00 | – | nessus |
| GLSA-202012-06 : Linux-PAM: Authentication bypass | 7 Dec 202000:00 | – | nessus |
 | CVE-2020-27780 | 18 Dec 202002:43 | – | circl |
 | Linux-pam Authorization Issues Vulnerability | 30 Nov 202000:00 | – | cnnvd |
 | CVE-2020-27780 | 17 Dec 202023:55 | – | cve |
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23 Dec 2020 08:00Current
7.9High risk
Vulners AI Score7.9
CVSS 3.19.8
CVSS 210
EPSS0.01959