Bug 1694771

Summary:	pam_get_authtok_verify() in libpam triggers extra password prompts
Product:	Red Hat Enterprise Linux 7	Reporter:	Julio Entrena Perez <jentrena>
Component:	pam	Assignee:	Tomas Mraz <tmraz>
Status:	CLOSED ERRATA	QA Contact:	Dalibor Pospíšil <dapospis>
Severity:	high	Docs Contact:
Priority:	high
Version:	7.6	CC:	dapospis, ssorce
Target Milestone:	rc	Keywords:	Triaged
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	pam-1.1.8-23.el7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1694772 (view as bug list)		Environment:
Last Closed:	2020-03-31 19:10:34 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1694772, 1711916

Description Julio Entrena Perez 2019-04-01 15:27:41 UTC

Description of problem:
Configuring pam_pwhistory on top of the default stack results in an extra, third password prompt when users change their passwords.

Version-Release number of selected component (if applicable):
pam-1.1.8-22.el7.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Create /etc/pam.d/system-auth-local with the following contents:

auth        include       system-auth-ac

account     include       system-auth-ac

password    requisite     pam_pwhistory.so try_first_pass remember=6 use_authok
password    include       system-auth-ac

session     include       system-auth-ac

2. Modify /etc/pam.d/system-auth softlink to point to above system-auth-local

3. Edit file /etc/pam.d/system-auth-ac and add option "use_authtok" to pam_pwquality.so

4. As a local user, try changing the password and use a complex enough and not previously used password:
[bob@rhel7 ~]$ passwd
Changing password for user bob.
Changing password for bob.
(current) UNIX password:

Actual results:

New password:
Retype new password:
Retype new password:
passwd: all authentication tokens updated successfully.
[bob@rhel7 ~]$

Three password prompts are issued.

Expected results:

New password:
Retype new password:
passwd: all authentication tokens updated successfully.
[bob@rhel7 ~]$

Two password prompts are issued.

Additional info:

Comment 6 Simo Sorce 2019-06-21 20:59:54 UTC

Adding to RPL tracker

Comment 11 errata-xmlrpc 2020-03-31 19:10:34 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:1005