Bug 2370259 - Do not block HMAC-MD4/5 in FIPS mode [fedora-all]
Summary: Do not block HMAC-MD4/5 in FIPS mode [fedora-all]
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: krb5
Version: rawhide
Hardware: Unspecified
OS: Linux
unspecified
medium
Target Milestone: ---
Assignee: Julien Rische
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-06-04 15:50 UTC by Julien Rische
Modified: 2025-06-10 02:59 UTC (History)
7 users (show)

Fixed In Version: krb5-1.21.3-6.fc43 krb5-1.21.3-5.fc41
Clone Of:
Environment:
Last Closed: 2025-06-06 14:17:11 UTC
Type: ---
Embargoed:


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System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker FREEIPA-12332 0 None None None 2025-06-04 15:53:59 UTC

Description Julien Rische 2025-06-04 15:50:11 UTC
To ensure RC4 HMAC-MD5 was not used in FIPS mode, access to HMAC-MD4/5 is not allowed in this mode. However, since we provide the "[libdefaults]radius_md5_fips_override" configuration parameter to allow using RADIUS regardless to the FIPS restrictions, we should allow HMAC-MD5 to be used too in this case, because it is required for the newly supported Message-Authenticator attribute. Having an exception for MD5 alone, but not for HMAC-MD5 does not make sense.

Reproducible: Always

Comment 1 Fedora Update System 2025-06-06 12:54:13 UTC
FEDORA-2025-1c915db8a5 (krb5-1.21.3-6.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2025-1c915db8a5

Comment 2 Fedora Update System 2025-06-06 14:17:11 UTC
FEDORA-2025-1c915db8a5 (krb5-1.21.3-6.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 3 Fedora Update System 2025-06-06 15:10:03 UTC
FEDORA-2025-3de9fe91ff (krb5-1.21.3-6.fc42) has been submitted as an update to Fedora 42.
https://bodhi.fedoraproject.org/updates/FEDORA-2025-3de9fe91ff

Comment 4 Fedora Update System 2025-06-06 15:12:37 UTC
FEDORA-2025-42a13f896e (krb5-1.21.3-5.fc41) has been submitted as an update to Fedora 41.
https://bodhi.fedoraproject.org/updates/FEDORA-2025-42a13f896e

Comment 5 Fedora Update System 2025-06-07 07:11:08 UTC
FEDORA-2025-42a13f896e has been pushed to the Fedora 41 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2025-42a13f896e`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2025-42a13f896e

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2025-06-07 08:25:56 UTC
FEDORA-2025-3de9fe91ff has been pushed to the Fedora 42 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2025-3de9fe91ff`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2025-3de9fe91ff

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 7 Fedora Update System 2025-06-09 02:35:16 UTC
FEDORA-2025-3de9fe91ff (krb5-1.21.3-6.fc42) has been pushed to the Fedora 42 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 8 Fedora Update System 2025-06-10 02:59:22 UTC
FEDORA-2025-42a13f896e (krb5-1.21.3-5.fc41) has been pushed to the Fedora 41 stable repository.
If problem still persists, please make note of it in this bug report.


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