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Bug 2211390 - CVE-2022-37967: MS-PAC extended KDC signature [rhel-8.8.0.z]
Summary: CVE-2022-37967: MS-PAC extended KDC signature [rhel-8.8.0.z]
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: krb5
Version: 8.7
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Julien Rische
QA Contact: Michal Polovka
Filip Hanzelka
URL:
Whiteboard:
Depends On: 2169477
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-05-31 11:35 UTC by RHEL Program Management Team
Modified: 2024-03-26 13:38 UTC (History)
6 users (show)

Fixed In Version: krb5-1.18.2-25.el8_8
Doc Type: Enhancement
Doc Text:
.MIT Kerberos now supports the Extended KDC MS-PAC signature With this update, MIT Kerberos, which is used by Red Hat, implements support for one of the two types of the Privilege Attribute Certificate (PAC) signatures introduced by Microsoft in response to recent CVEs. Specifically, MIT Kerberos in RHEL 8 supports the Extended KDC signature that was released in link:https://support.microsoft.com/en-us/topic/kb5020805-how-to-manage-kerberos-protocol-changes-related-to-cve-2022-37967-997e9acc-67c5-48e1-8d0d-190269bf4efb[KB5020805] and that addresses link:https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-37967[CVE-2022-37967]. Note that because of link:https://access.redhat.com/articles/rhel8-abi-compatibility[ABI stability constraints], MIT Kerberos on RHEL8 cannot support the other PAC signature type, that is Ticket signature as defined in link:https://support.microsoft.com/en-au/topic/kb4598347-managing-deployment-of-kerberos-s4u-changes-for-cve-2020-17049-569d60b7-3267-e2b0-7d9b-e46d770332ab[KB4598347]. To troubleshoot problems related to this enhancement, see the following Knowledgebase resources: * link:https://access.redhat.com/solutions/7052125[RHEL-8.9 IdM update, web UI and CLI 401 Unauthorized with KDC S4U2PROXY_EVIDENCE_TKT_WITHOUT_PAC - user and group objects need SIDs] * link:https://access.redhat.com/solutions/394763[find_sid_for_ldap_entry - [file ipa_sidgen_cofind_sid_for_ldap_entry - [file ipa_sidgen_common.c, line 521]: Cannot convert Posix ID [120000023l] into an unused SID] * link:https://access.redhat.com/solutions/7014959[When upgrading to RHEL9, IDM users are not able to login anymore] * link:https://access.redhat.com/articles/7027037[POSIX IDs, SIDs and IDRanges in IPA] See also link:https://bugzilla.redhat.com/show_bug.cgi?id=2211387[BZ#2211387] and link:https://bugzilla.redhat.com/show_bug.cgi?id=2176406[BZ#2176406].
Clone Of: 2169477
Environment:
Last Closed: 2023-06-27 14:58:57 UTC
Type: ---
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker FREEIPA-9943 0 None None None 2023-05-31 11:37:04 UTC
Red Hat Issue Tracker RHELPLAN-158691 0 None None None 2023-05-31 11:37:10 UTC
Red Hat Product Errata RHEA-2023:3850 0 None None None 2023-06-27 14:58:58 UTC

Comment 11 errata-xmlrpc 2023-06-27 14:58:57 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 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/RHEA-2023:3850
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