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kritisch

CVE-2020-27780

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

Veröffentlicht Geändert CWE 287
In der Trivy Database seit spätestens 24. Okt. 2026, 07:11 UTCWann der Eintrag vor diesem Build hinzukam, ist nicht erfasst.

Einstufung nach Quelle

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

Trivys eigenes Label ist CRITICAL. Kritisch laut NVD, CBL-Mariner. Niedriger laut Red Hat (mittel).

Beschreibung

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.

Betroffene Pakete und behobene Versionen

QuellePaketBehoben in
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
Alle 16 Einträge aus 16 Quellen zeigen
QuellePaketBehoben in
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

Referenzen

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.