Alerts This Week
Warning Icon 1 714
Alerts This Week
Warning Icon 1 714

Ubuntu 20.04 and 18.04 USN-5959-1 Critical Kerberos Denial of Service

ubuntu
Calendar Grey March 17, 2023
Dist Ubuntu Esm H88
Protect your Ubuntu machine from emerging krb5 vulnerabilities that impact LTS editions. It's essential to apply updates without delay.
Several security issues were fixed in Kerberos.

Summary

Topics%20covered

Topics Covered

security advisory critical DoS Ubuntu authentication krb5 KDC

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: krb5-k5tls 1.17-6ubuntu4.3 krb5-kdc 1.17-6ubuntu4.3 krb5-kdc-ldap 1.17-6ubuntu4.3 krb5-pkinit 1.17-6ubuntu4.3 Ubuntu 18.04 LTS: krb5-k5tls 1.16-2ubuntu0.4 krb5-kdc 1.16-2ubuntu0.4 krb5-kdc-ldap 1.16-2ubuntu0.4 krb5-pkinit 1.16-2ubuntu0.4 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-5959-1

CVE-2021-36222, CVE-2021-37750

Severity
critical
Lowest
Low
Medium
High
Critical

March 16, 2023

Topics%20covered

Topics Covered

security advisory critical DoS Ubuntu authentication krb5 KDC

Package Information

https://launchpad.net/ubuntu/+source/krb5/1.17-6ubuntu4.3 https://launchpad.net/ubuntu/+source/krb5/1.16-2ubuntu0.4

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here