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Debian 9 Stretch DLA-2771-1 Critical: Kerberos Auth Flaws

debian lts
Calendar Grey September 30, 2021
Dist Debian Esm H88
Recent revisions address significant vulnerabilities within the MIT Kerberos implementation, particularly impacting Debian LTS installations regarding user authentication protocols.
Several vulnerabilities were fixed in MIT Kerberos, a system for authenticating users and services on a network
Topics%20covered

Topics Covered

security advisory debian kerberos critical flaw authentication

Summary

CVE-2018-5729
CVE-2018-5730

Fix flaws in LDAP DN checking.

CVE-2018-20217

Ignore password attributes for S4U2Self requests.

CVE-2021-37750

Fix KDC null deref on TGS inner body null server.

For Debian 9 stretch, these problems have been fixed in version
1.15-1+deb9u3.

We recommend that you upgrade your krb5 packages.

For the detailed security status of krb5 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/krb5

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


Severity
critical
Lowest
Low
Medium
High
Critical

Package: krb5
Version: 1.15-1+deb9u3
CVE ID: CVE-2018-5729 CVE-2018-5730 CVE-2018-20217 CVE-2021-37750
Debian Bug: 891869 917387 992607

Topics%20covered

Topics Covered

security advisory debian kerberos critical flaw authentication

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