CVE-2020-27780

Published: Dec 18, 2020Modified: Jun 17, 2026

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: NVD

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.

Affected (1)

Products: Linux Pam: Linux Pam

Linux Pam

1 product

Linux Pam

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Linux Pam Linux Pam	From 1.5.0 to 1.5.1

Related CWEs

CWE-287

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

References (2)

https://bugzilla.redhat.com/show_bug.cgi?id=1901094

Source: secalert@redhat.com

Issue TrackingThird Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1901094

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingThird Party Advisory

Timeline

No history available yet.