Bug 1055016 - GSSAPICleanupCredentials must default to 'no' when using persistent keys
Summary: GSSAPICleanupCredentials must default to 'no' when using persistent keys
Alias: None
Product: Fedora
Classification: Fedora
Component: openssh
Version: 20
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Petr Lautrbach
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2014-01-18 00:46 UTC by Enrico Scholz
Modified: 2015-11-16 08:03 UTC (History)
5 users (show)

Fixed In Version: openssh-6.4p1-4.fc20
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2014-05-21 23:23:28 UTC
Type: Bug

Attachments (Terms of Use)

Description Enrico Scholz 2014-01-18 00:46:17 UTC
Description of problem:

Removing GSSAPI credentials on logout causes severe system because Fedora 20 uses persistent GSSAPI keys.  These keys are shared between sessions so exiting one session will remove unrelated GSSAPI credentials of other sessions.  This renders the system unusable because e.g. access to NFS4 blocks or login tasks fail.

The GSSAPICleanupCredentials must be set to no hence.

Things worked well in previous Fedora versions because persistent GSSAPI keys were not used there.

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


Comment 1 Tomas Mraz 2014-01-30 18:20:06 UTC
Perhaps there should be proper reference counting on the shared persistent keys done by the kerberos library. However until this is implemented setting 'GSSAPICleanupCredentials no' is a reasonable workaround.

Comment 2 Fedora Update System 2014-05-15 14:02:02 UTC
openssh-6.4p1-4.fc20 has been submitted as an update for Fedora 20.

Comment 3 Fedora Update System 2014-05-16 10:03:06 UTC
Package openssh-6.4p1-4.fc20:
* should fix your issue,
* was pushed to the Fedora 20 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing openssh-6.4p1-4.fc20'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).

Comment 4 Fedora Update System 2014-05-21 23:23:28 UTC
openssh-6.4p1-4.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

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