What is the vulnerability ID for this flaw in Linux-Pam?

The vulnerability ID for this flaw in Linux-Pam is CVE-2020-27780.

What is the severity of CVE-2020-27780?

CVE-2020-27780 has a severity rating of 9.8 (Critical).

How does this vulnerability in Linux-Pam affect security?

This vulnerability in Linux-Pam allows an attacker to authenticate with root privileges using an empty password for non-existing users.

Which versions of Linux-Pam are affected by CVE-2020-27780?

Versions of Linux-Pam prior to 1.5.1 are affected by CVE-2020-27780.

How can I fix CVE-2020-27780 in Linux-Pam?

To fix CVE-2020-27780, update Linux-Pam to version 1.5.1 or later.

Vulnerability/
CVE-2020-27780

critical

CWE

287

24/11/2020

17/12/2020

4/8/2024

CVE-2020-27780

First published: Tue Nov 24 2020(Updated: )

A flaw was found in Linux-Pam 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. Reference: <a href="https://github.com/linux-pam/linux-pam/issues/284">https://github.com/linux-pam/linux-pam/issues/284</a> Upstream patch: <a href="https://github.com/linux-pam/linux-pam/pull/300">https://github.com/linux-pam/linux-pam/pull/300</a>

Credit: secalert@redhat.com

Affected Software	Affected Version	How to fix
redhat/pam	<1.5.1	1.5.1
Linux-PAM	>=1.5.0<1.5.1

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Frequently Asked Questions

What is the vulnerability ID for this flaw in Linux-Pam?
The vulnerability ID for this flaw in Linux-Pam is CVE-2020-27780.
What is the severity of CVE-2020-27780?
CVE-2020-27780 has a severity rating of 9.8 (Critical).
How does this vulnerability in Linux-Pam affect security?
This vulnerability in Linux-Pam allows an attacker to authenticate with root privileges using an empty password for non-existing users.
Which versions of Linux-Pam are affected by CVE-2020-27780?
Versions of Linux-Pam prior to 1.5.1 are affected by CVE-2020-27780.
How can I fix CVE-2020-27780 in Linux-Pam?
To fix CVE-2020-27780, update Linux-Pam to version 1.5.1 or later.

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