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Bug 1749862 - GSSAPITrustDNS fails on proxy hosts causing gssapi authentication failures
Summary: GSSAPITrustDNS fails on proxy hosts causing gssapi authentication failures
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: openssh
Version: 8.1
Hardware: Unspecified
OS: Unspecified
Target Milestone: rc
: 8.0
Assignee: Jakub Jelen
QA Contact: Ondrej Moriš
Depends On:
TreeView+ depends on / blocked
Reported: 2019-09-06 15:24 UTC by Oliver Ilian
Modified: 2023-09-14 05:42 UTC (History)
5 users (show)

Fixed In Version: openssh-8.0p1-5.el8
Doc Type: No Doc Update
Doc Text:
Clone Of:
Last Closed: 2020-11-04 01:31:59 UTC
Type: Bug
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:4439 0 None None None 2020-11-04 01:32:19 UTC

Description Oliver Ilian 2019-09-06 15:24:25 UTC
Description of problem:
After upgrading from openssh-7.8p1-4.el8.x86_64 to openssh-8.0p1-3.el8, my GSSAPIDelegateCredentials is no longer working. The server is asking for a password to log in, while on 7.8, it just logs me in.

Version-Release number of selected component (if applicable):
RHEL 8.1

How reproducible:

Steps to Reproduce:
1. upgrade openssh from 7.8p1-4.el8 to 8.0p1-3.el8
2. try to ssh into a server that was previously using GSSAPI auth to log you in

Actual results:
user is asked for a password when using ssh

Expected results:
user should just be logged in

Comment 1 Jakub Jelen 2019-09-10 09:59:11 UTC
The option `GSSAPIDelegateCredentials` does not do anything with authentication. It would just forward your kerberos credentials to the server after you would get authenticated using GSSAPIAuthentication or GSSAPIKeyExchange. Can you share debug logs from the old working and new non-working setups? And optionally also your client and configurations?

Comment 22 errata-xmlrpc 2020-11-04 01:31:59 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 (openssh 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.


Comment 23 Red Hat Bugzilla 2023-09-14 05:42:56 UTC
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 1000 days

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