VOOZH about

URL: https://nvd.nist.gov/vuln/detail/CVE-2020-27780

⇱ NVD - CVE-2020-27780

  1. Vulnerabilities

CVE-2020-27780 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)
https://bugzilla.redhat.com/show_bug.cgi?id=1901094 CVE, Inc., Red Hat Issue Tracking  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-287 Improper Authentication Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

5 change records found show changes

CVE Modified by Red Hat, Inc. 6/16/2026 11:09:37 PM

Action Type Old Value New Value
Added Affected 
[{"vendor":"n/a","product":"pam","versions":[{"version":"pam 1.5.1","status":"affected"}]}]

CVE Modified by CVE 11/21/2024 12:21:49 AM

Action Type Old Value New Value
Added Reference 
https://bugzilla.redhat.com/show_bug.cgi?id=1901094

CVE Modified by Red Hat, Inc. 5/14/2024 2:59:10 AM

Action Type Old Value New Value

Reanalysis by NIST 12/28/2020 2:11:29 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:a:linux-pam:linux-pam:*:*:*:*:*:*:*:* versions up to (excluding) 1.5.1


 
OR
 *cpe:2.3:a:linux-pam:linux-pam:*:*:*:*:*:*:*:* versions from (including) 1.5.0 up to (excluding) 1.5.1

Initial Analysis by NIST 12/22/2020 3:50:15 PM

Action Type Old Value New Value
Added CVSS V3.1 
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added CVSS V2 
NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Added CPE Configuration 
OR
 *cpe:2.3:a:linux-pam:linux-pam:*:*:*:*:*:*:*:* versions up to (excluding) 1.5.1
Changed Reference Type 
https://bugzilla.redhat.com/show_bug.cgi?id=1901094 No Types Assigned


 
https://bugzilla.redhat.com/show_bug.cgi?id=1901094 Issue Tracking, Third Party Advisory

Quick Info

CVE Dictionary Entry:
CVE-2020-27780
NVD Published Date:
12/17/2020
NVD Last Modified:
06/16/2026
Source:
Red Hat, Inc.