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.

Description of problem:

GSS-TSIG stopped working (it worked in the past) with MS Active Directory so Windows can not register/update DNS records. This bug is very sneaky - no log in the logfile, after debugging enabled: "failed gss_inquire_cred: GSSAPI error: Major = Unspecified GSS failure. Minor code may provide more information, Minor = Success."

This could be GSSAPI library bug or bind bug (or both), because it works with ISC SPNEGO (after recompiling bind without "--disable-isc-spnego") but not with GSSAPI SPNEGO.

WORKAROUND: Downgrading of kerberos packages to krb5-devel-1.9-33.el6_3.3.i686.rpm krb5-libs-1.9-33.el6_3.3.i686.rpm krb5-workstation-1.9-33.el6_3.3.i686.rpm

This is an old bug, so downgrading of krb5 could cause some security issues.


How reproducible:

Every signed Active Directory dns update using gssapi.


Affected OS versions:

All versions of krb5 > 1.9-33.el6_3.3 in CentOS (see https://bugs.centos.org/view.php?id=6526). I am not using it in rhel, but it seems to be an rhel issue.

Hi.

AFAIK this is not a bug in BIND's source. The "--disable-isc-spnego" is used
to NOT use ISC own SPNEGO implementation, but to rather use the GSSAPI
implementation. This has to be fixed in the krb5.

The fix should be this:
http://krbdev.mit.edu/rt/Ticket/Display.html?id=7858

I'm moving this to krb5 component and CC-ing Simo, as he initiated a discussion
about this recently.

This bug has recently been fixed in Fedora, see:
https://bugzilla.redhat.com/show_bug.cgi?id=1066000

you may want to clone the bug for RHEL ?

This Fedora bug seems to be the same. Will be those fixed packages backported to the rhel?

Nalin,
can we backport to RHEL 6.6 ?

I think the patch could be added, yes.

Can we get devel_ack then ?

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.

http://rhn.redhat.com/errata/RHSA-2014-1389.html