CVE-2020-27780

Published: 18 December 2020

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.

Priority

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package	Release	Status
pam Launchpad, Ubuntu, Debian	bionic	Not vulnerable
	focal	Not vulnerable
	groovy	Not vulnerable
	trusty	Not vulnerable
	upstream	Not vulnerable (debian: Only affects 1.5.0)
	xenial	Not vulnerable

Severity score breakdown

Parameter	Value
Base score	9.8
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

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