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Fedora 41: krb5 Update FEDORA-2025-3e5228ee23 Moderate: Buffer Overflow Fix

fedora
Calendar Grey February 14, 2025
Dist Fedora Esm H88
Fedora enhances krb5 to avert buffer overflow in ulog and improves PKINIT by incorporating support for EC certificates. Discover the specifics.
Prevent overflow when calculating ulog block size (CVE-2025-24528) Support PKCS11 EC client certs in PKINIT kdb5_util: fix DB entry flags on modification Add ECDH support for PKINI...

Summary

Kerberos V5 is a trusted-third-party network authentication system,

which can improve your network's security by eliminating the insecure

practice of sending passwords over the network in unencrypted form.

Update Information:

Prevent overflow when calculating ulog block size (CVE-2025-24528) Support PKCS11 EC client certs in PKINIT kdb5_util: fix DB entry flags on modification Add ECDH support for PKINIT (RFC5349)

Topics%20covered

Topics Covered

security advisory buffer overflow Fedora DoS moderate severity authentication system PKINIT karb5 CVE-2025-24528 EC certificates

Change Log

* Tue Feb 11 2025 Julien Rische - 1.21.3-4 - Prevent overflow when calculating ulog block size (CVE-2025-24528) Resolves: rhbz#2342811 - Support PKCS11 EC client certs in PKINIT Resolves: rhbz#2341962 - kdb5_util: fix DB entry flags on modification Resolves: rhbz#2336555 - Add ECDH support for PKINIT (RFC5349) Resolves: rhbz#2214326

References


[ 1 ] Bug #2214326 - [RFE] Add ECDH support for PKINIT (RFC5349) [fedora] https://bugzilla.redhat.com/show_bug.cgi?id=2214326 [ 2 ] Bug #2336555 - kdb5_util: fix DB entry flags on modification [fedora] https://bugzilla.redhat.com/show_bug.cgi?id=2336555 [ 3 ] Bug #2341962 - Support PKCS11 EC client certs in PKINIT [fedora] https://bugzilla.redhat.com/show_bug.cgi?id=2341962 [ 4 ] Bug #2342811 - CVE-2025-24528 krb5: overflow when calculating ulog block size [fedora-41] https://bugzilla.redhat.com/show_bug.cgi?id=2342811

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-3e5228ee23' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Name: krb5
Product: Fedora 41
Version: 1.21.3
Release: 4.fc41
URL: https://web.mit.edu/kerberos/www/
Summary: The Kerberos network authentication system

Topics%20covered

Topics Covered

security advisory buffer overflow Fedora DoS moderate severity authentication system PKINIT karb5 CVE-2025-24528 EC certificates

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