The pkinit_check_kdc_pkid function in plugins/preauth/pkinit/pkinit_crypto_openssl.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 and 1.11.x before 1.11.1 does not properly handle errors during extraction of fields from an X.509 certificate, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed KRB5_PADATA_PK_AS_REQ AS-REQ request.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade krb5-workstationUpgrade krb5-serverUpgrade krb5-develUpgrade krb5-libsUpgrade krb5-server-ldapUpgrade krb5-pkinit-openssl | Dec 1, 2016 | Mar 5, 2013 |
| Debian | — | Upgrade krb5 | Jul 30, 2024 | Mar 5, 2013 |
| Freebsd | — | Upgrade krb5 | Dec 10, 2025 | Feb 22, 2013 |
| Oracle Solaris | — | Upgrade consolidation/osnet/osnet-incorporation to version 0.5.11-0.175.2.0.0.42.2 on Solaris 11.2Upgrade service/security/kerberos-5 to version 0.5.11-0.175.1.10.0.3.2 on Solaris 11.1 | May 29, 2017 | Mar 5, 2013 |
| Oracle_linux | — | Upgrade krb5-pkinit-opensslUpgrade krb5-server-ldapUpgrade krb5-serverUpgrade krb5-develUpgrade krb5-libsUpgrade krb5-workstation | Oct 16, 2024 | Mar 3, 2013 |
| Suse | — | Upgrade krb5-mini-develUpgrade krb5-debuginfo-x86Upgrade krb5Upgrade krb5-client-debuginfoUpgrade krb5-docUpgrade krb5-32bitUpgrade krb5-serverUpgrade krb5-plugin-kdb-ldapUpgrade krb5-debuginfoUpgrade krb5-server-debuginfoUpgrade krb5-develUpgrade krb5-plugin-kdb-ldap-debuginfoUpgrade krb5-debugsourceUpgrade krb5-clientUpgrade krb5-plugin-preauth-pkinitUpgrade krb5-devel-32bitUpgrade krb5-debuginfo-32bitUpgrade krb5-miniUpgrade krb5-x86Upgrade krb5-plugin-preauth-pkinit-debuginfo | Dec 12, 2013 | Mar 5, 2013 |
| Ubuntu | — | Upgrade krb5-kdcUpgrade libgssapi-krb5-2Upgrade libkadm5clnt-mit7Upgrade libkadm5srv-mit8Upgrade libkrb5-3Upgrade libkrad0Upgrade libkdb5-6Upgrade krb5-userUpgrade krb5-otpUpgrade libkadm5srv-mit7Upgrade libkdb5-4Upgrade libkadm5srv-mit9Upgrade libgssrpc4Upgrade libkadm5clnt-mit8Upgrade krb5-admin-serverUpgrade libkrb5support0Upgrade libkdb5-7Upgrade krb5-kdc-ldapUpgrade libkadm5clnt-mit9Upgrade libk5crypto3Upgrade krb5-pkinit | Nov 8, 2024 | Mar 5, 2013 |
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