Bug 2188046
| Summary: | Support requiring EMS in TLS 1.2, default to it when in FIPS mode [rhel-9.2.0.z] | ||
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| Product: | Red Hat Enterprise Linux 9 | Reporter: | RHEL Program Management Team <pgm-rhel-tools> |
| Component: | openssl | Assignee: | Dmitry Belyavskiy <dbelyavs> |
| Status: | CLOSED ERRATA | QA Contact: | Hubert Kario <hkario> |
| Severity: | medium | Docs Contact: | Filip Hanzelka <fhanzelk> |
| Priority: | medium | ||
| Version: | 9.0 | CC: | cllang, fhanzelk, hkario, jherrman, mjahoda, ssorce |
| Target Milestone: | rc | Keywords: | Triaged, ZStream |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | 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.
In addition, connecting from a FIPS-enabled RHEL client to a hypervisor such as VMWare ESX now fails with a `Provider routines::ems not enabled` error if the hypervisor uses TLS 1.2 without EMS. To work around this problem, update the hypervisor to support TLS 1.3 or TLS 1.2 with the EMS extension. For VMWare vSphere, this means version 8.0 or later.
For more information, see link:https://access.redhat.com/solutions/7018256[TLS Extension "Extended Master Secret" enforced with Red Hat Enterprise Linux 9.2].
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Story Points: | --- |
| Clone Of: | 2157951 | Environment: | |
| Last Closed: | 2023-06-21 14:39:51 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2157951 | ||
| Bug Blocks: | |||
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Comment 12
errata-xmlrpc
2023-06-21 14:39:51 UTC
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