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Vulnérabilités / CVE-2020-27780

critique

CVE-2020-27780

pam: authentication bypass when the user doesn't exist and root password is blank

Publiée Modifiée CWE 287
Dans la Trivy database depuis au moins le 24 oct. 2026, 07:11 UTCLa date d'entrée avant ce build n'est pas enregistrée.

Sévérité par source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Le label propre à Trivy est CRITICAL. Critique selon NVD, CBL-Mariner. Plus basse selon Red Hat (moyenne).

Description

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.

Paquets affectés et versions corrigées

SourcePaquetCorrigé en
CBL-Mariner 1.0pam0:1.5.1-2.cm1
alpine 3.13linux-pam1.5.1
alpine 3.14linux-pam1.5.1-r0
alpine 3.15linux-pam1.5.1-r0
alpine 3.16linux-pam1.5.1-r0
alpine 3.17linux-pam1.5.1-r0
alpine 3.18linux-pam1.5.1-r0
alpine 3.19linux-pam1.5.1-r0
alpine 3.20linux-pam1.5.1-r0
alpine 3.21linux-pam1.5.1-r0
alpine 3.22linux-pam1.5.1-r0
alpine 3.23linux-pam1.5.1-r0
Afficher les 16 entrées de 16 sources
SourcePaquetCorrigé en
CBL-Mariner 1.0pam0:1.5.1-2.cm1
alpine 3.13linux-pam1.5.1
alpine 3.14linux-pam1.5.1-r0
alpine 3.15linux-pam1.5.1-r0
alpine 3.16linux-pam1.5.1-r0
alpine 3.17linux-pam1.5.1-r0
alpine 3.18linux-pam1.5.1-r0
alpine 3.19linux-pam1.5.1-r0
alpine 3.20linux-pam1.5.1-r0
alpine 3.21linux-pam1.5.1-r0
alpine 3.22linux-pam1.5.1-r0
alpine 3.23linux-pam1.5.1-r0
alpine 3.24linux-pam1.5.1-r0
alpine edgelinux-pam1.5.1-r0
root.io alpine 3.18rootio-linux-pam1.5.1-r0
root.io alpine 3.19rootio-linux-pam1.5.1-r0

Références

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.