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Bug 1858322 - kadmin service doesn't start if legacy/unrecognized enctype is in supported_enctypes
Summary: kadmin service doesn't start if legacy/unrecognized enctype is in supported_e...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: krb5
Version: 8.3
Hardware: All
OS: Unspecified
unspecified
low
Target Milestone: rc
: 8.0
Assignee: Robbie Harwood
QA Contact: Filip Dvorak
URL: https://github.com/krb5/krb5/pull/1094
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-07-17 14:21 UTC by Filip Dvorak
Modified: 2020-11-04 21:13 UTC (History)
3 users (show)

Fixed In Version: krb5-1.18.2-4.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-11-04 01:59:24 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:4541 0 None None None 2020-11-04 01:59:37 UTC

Description Filip Dvorak 2020-07-17 14:21:04 UTC 
Description of problem:
The problem is that it is not possible to run the kadmin service
after the upgrade of krb from 1.17 (no default configuration) to 1.18 because the configuration file
/var/kerberos/krb5kdc/kdc.conf contains legacy/unsuported enctypes (DES and 3DES ciphers)

Version-Release number of selected component (if applicable):
RHEL-8.3, krb5-server-1.18.2-3


How reproducible:
always

Steps to Reproduce:
1. configure krb5 server (krb5-1.17-18) with some user and run it
2. verify that supported_enctypes in kdc.conf contains "des3-hmac-sha1:normal"
3. upgrade to krb5-1.18.2-3
4. systemctl start kadmin krb5kdc

Actual results:
#systemctl start kadmin

● kadmin.service - Kerberos 5 Password-changing and Administration
    Loaded: loaded (/usr/lib/systemd/system/kadmin.service; disabled;
 vendor preset: disabled)
    Active: failed (Result: exit-code) since Fri 2020-06-19 12:20:36
 IST; 45ms ago
   Process: 74733 ExecStart=/usr/sbin/kadmind -P /var/run/kadmind.pid
 $KADMIND_ARGS (code=exited, status=1/FAILURE)

Jun 19 12:20:36 dell-r530-5.gsslab.pnq.redhat.com systemd[1]: Starting Kerberos 5 Password-changing and Administration...
Jun 19 12:20:36 dell-r530-5.gsslab.pnq.redhat.com kadmind[74733]: kadmind: Required parameters in kdc.conf missing while initializing, aborting

Expected results:
krb5kdc starts just fine when it finds unrecognized enctypes

Additional info:
The error message "kadmind: Required parameters in kdc.conf missing while initializing, aborting" should be better and more informative.
Comment 13 errata-xmlrpc 2020-11-04 01:59:24 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 (krb5 bug fix and enhancement update), 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-2020:4541
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