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Debian LTS Advisory DLA-2771-1                [email protected]
https://www.debian.org/lts/security/                          Adrian Bunk
September 30, 2021                            https://wiki.debian.org/LTS
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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

Several vulnerabilities were fixed in MIT Kerberos,
a system for authenticating users and services on a network.


    Fix flaws in LDAP DN checking.


    Ignore password attributes for S4U2Self requests.


    Fix KDC null deref on TGS inner body null server.

For Debian 9 stretch, these problems have been fixed in version

We recommend that you upgrade your krb5 packages.

For the detailed security status of krb5 please refer to
its security tracker page at:

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