A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket using an older encryption type (single-DES, triple-DES, or RC4), the attacker can crash the KDC by making an S4U2Self request.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade krb5 | Jan 10, 2019 | Dec 26, 2018 |
| Amazon_linux | — | Upgrade krb5 | Jun 4, 2020 | Dec 26, 2018 |
| Debian | — | Upgrade krb5 | Feb 20, 2019 | Dec 26, 2018 |
| Huawei Euleros 2_0_sp2 | — | Upgrade libkadm5Upgrade krb5-libsUpgrade krb5-workstationUpgrade krb5-serverUpgrade krb5-pkinitUpgrade krb5-server-ldapUpgrade krb5-devel | Dec 4, 2019 | Dec 26, 2018 |
| Huawei Euleros 2_0_sp3 | — | Upgrade krb5-workstationUpgrade krb5-serverUpgrade krb5-libsUpgrade krb5-pkinitUpgrade krb5-server-ldapUpgrade krb5-develUpgrade libkadm5 | Dec 18, 2019 | Dec 26, 2018 |
| Huawei Euleros 2_0_sp5 | — | Upgrade krb5-libsUpgrade krb5-serverUpgrade krb5-pkinitUpgrade krb5-develUpgrade libkadm5Upgrade krb5-workstationUpgrade krb5-server-ldap | Dec 11, 2019 | Dec 26, 2018 |
| Oracle Solaris | — | Upgrade security/kerberos-5/kdc to version 1.16.1.0-11.4.6.0.1.1.0 on Solaris 11.4Upgrade security/kerberos-5 to version 1.16.1.0-11.4.6.0.1.1.0 on Solaris 11.4 | Feb 20, 2019 | Dec 26, 2018 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Dec 26, 2018 |
| Suse | — | Upgrade krb5-plugin-preauth-pkinitUpgrade krb5-mini-develUpgrade krb5-miniUpgrade krb5-serverUpgrade krb5-plugin-kdb-ldapUpgrade krb5-clientUpgrade krb5-devel-32bitUpgrade krb5-develUpgrade krb5Upgrade krb5-docUpgrade krb5-32bitUpgrade krb5-plugin-preauth-otp | Jan 18, 2019 | Dec 26, 2018 |
| Ubuntu | — | Upgrade krb5-user (Ubuntu Pro)Upgrade krb5-kdc (Ubuntu Pro)Upgrade krb5-admin-serverUpgrade libkdb5-8 (Ubuntu Pro)Upgrade libkdb5-9Upgrade libgssapi-krb5-2Upgrade krb5-userUpgrade krb5-kdcUpgrade libgssapi-krb5-2 (Ubuntu Pro)Upgrade krb5-admin-server (Ubuntu Pro) | Mar 22, 2023 | Dec 26, 2018 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Dec 26, 2018 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub