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.
Bug 2157951 - Support requiring EMS in TLS 1.2, default to it when in FIPS mode
Summary: Support requiring EMS in TLS 1.2, default to it when in FIPS mode
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: openssl
Version: 9.0
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Dmitry Belyavskiy
QA Contact: Hubert Kario
Mirek Jahoda
URL:
Whiteboard:
Depends On:
Blocks: 2188046 2218721
TreeView+ depends on / blocked
 
Reported: 2023-01-03 17:03 UTC by Hubert Kario
Modified: 2023-11-07 11:26 UTC (History)
8 users (show)

Fixed In Version: openssl-3.0.7-16.el9
Doc Type: Enhancement
Doc Text:
.The `Extended Master Secret` TLS Extension is now enforced on FIPS-enabled systems With the release of the link:https://access.redhat.com/errata/RHSA-2023:3722[RHSA-2023:3722] advisory, the TLS `Extended Master Secret` (EMS) extension (RFC 7627) is mandatory for TLS 1.2 connections on FIPS-enabled RHEL 9 systems. This is in accordance with FIPS-140-3 requirements. TLS 1.3 is not affected. Legacy clients that do not support EMS or TLS 1.3 now cannot connect to FIPS servers running on RHEL 9. Similarly, RHEL 9 clients in FIPS mode cannot connect to servers that only support TLS 1.2 without EMS. This in practice means that these clients cannot connect to servers on RHEL 6, RHEL 7 and non-RHEL legacy operating systems. This is because the legacy 1.0.x versions of OpenSSL do not support EMS or TLS 1.3. For more information, see link:https://access.redhat.com/solutions/7018256[TLS Extension "Extended Master Secret" enforced with Red Hat Enterprise Linux 9.2].
Clone Of:
: 2188046 (view as bug list)
Environment:
Last Closed: 2023-11-07 08:52:59 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github openssl openssl issues 19989 0 None open Add support for mandating use of EMS in TLS 1.2 2023-01-03 17:03:40 UTC
Github openssl openssl pull 20241 0 None open Add option to FIPS module to enforce EMS check during KDF TLS1_PRF 2023-02-14 17:14:19 UTC
Red Hat Issue Tracker CRYPTO-9271 0 None None None 2023-01-13 17:08:55 UTC
Red Hat Issue Tracker RHELPLAN-143562 0 None None None 2023-01-03 17:05:03 UTC
Red Hat Product Errata RHBA-2023:6627 0 None None None 2023-11-07 08:53:37 UTC

Internal Links: 2224204

Description Hubert Kario 2023-01-03 17:03:40 UTC 
Description of problem:
FIPS 140-3 IG requires that only EMS KDF is in use for TLS 1.2 with modules validated after May 2023.

OpenSSL should have a way to require use of EMS when in FIPS mode.
Comment 12 Richard W.M. Jones 2023-06-30 07:54:34 UTC 
This change prevents connecting to VMware servers which stops all kinds of
things such as backups and V2V conversions: bug 2218721
Comment 13 Hubert Kario 2023-06-30 10:04:53 UTC 
Requiring use of TLSv1.2 with EMS is a non-optional requirement for cryptographic modules certified under current FIPS 140-3.

The solution is to upgrade the openssl used by VMware.

The EMS extension was standardised 8 years ago (RFC7627). If for some reason they don't want to use EMS, they can also use TLSv1.3, which was standardised 5 years ago (RFC8446).
Comment 26 errata-xmlrpc 2023-11-07 08:52:59 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 (openssl 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-2023:6627
Note You need to log in before you can comment on or make changes to this bug.