Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1401432

Summary:	yppasswd crypt() failed errors when using passwd.adjunct
Product:	Red Hat Enterprise Linux 7	Reporter:	Petr Kubat <pkubat>
Component:	yp-tools	Assignee:	Petr Kubat <pkubat>
Status:	CLOSED ERRATA	QA Contact:	Vaclav Danek <vdanek>
Severity:	medium	Docs Contact:	Vladimír Slávik <vslavik>
Priority:	unspecified
Version:	7.4	CC:	asakure, databases-maint, extras-qa, gedetil, hhorak, mmuzila, ovasik, pkubat, todoleza
Target Milestone:	rc	Keywords:	Patch
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	yp-tools-2.14-4.el7	Doc Type:	Bug Fix
Doc Text:	yppasswd no longer crashes due to Network Information System security features used The yppasswd client tried to use a wrong string as salt when checking passwords because it did not recognize the following situations: * The NIS server was configured to use the `passwd.adjunct` map * The variable "MERGE_PASSWD=false" was set in the NIS server's file `/var/yp/Makefile` As a consequence, yppasswd failed with the following error message: "crypt() failed". The yppasswd client has been fixed to recognize these situations and now delegates the checks to the yppasswdd daemon running on the server.	Story Points:	---
Clone Of:	1297955	Environment:
Last Closed:	2017-08-01 16:14:29 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:	1297955
Bug Blocks:	1380359, 1393868

Description Petr Kubat 2016-12-05 09:09:47 UTC

+++ This bug was initially created as a clone of Bug #1297955 +++

Description of problem: 
When using passwd.adjunct map, yppasswd command fails with "crypt() failed" error, since it tries to use the "##user" string as salt. There's a patch, yp-tools-2.12-adjunct.patch, that attempts to fix this, but it gets it wrong.

Version-Release number of selected component (if applicable):
yp-tools-2.14-5 in Fedora 23, but also yp-tools-2.14-3.el7 in RHEL 7, and possibly other Fedora versions.

How reproducible:
Consistently fails when using passwd.adjunct.

Steps to Reproduce:
1. Set up passwd.adjunct map on NIS server
2. Run yppasswd command on NIS client (F23 or RHEL7)
3. Enter passwords when prompted

Actual results:
"crypt() failed" error in response to new passwords

Expected results:
Should accept password without checking against "##user" string, and generate correct salt before calling crypt()

Additional info:
yp-tools-2.12-adjunct-fix.patch (attached) fixes problem.  Use it instead of broken yp-tools-2.12-adjunct.patch file in src.rpm.

--- Additional comment from Gilbert E. Detillieux on 2016-11-24 11:01:11 EST ---

This bug still exists in RHEL7, and most likely in newer Fedora releases.

--- Additional comment from Petr Kubat on 2016-11-28 09:04:39 EST ---

Thanks for the report. I pushed the patch into rawhide and F25.

--- Additional comment from Gilbert E. Detillieux on 2016-12-02 14:21:03 EST ---

Any plans to make this update available for RHEL7?

Comment 26 errata-xmlrpc 2017-08-01 16:14:29 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-2017:1880