krb5, libkadm5 security update

CentOS Errata and Security Advisory CESA-2018:0666

Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos key distribution center (KDC).

Security Fix(es):

• krb5: Authentication bypass by improper validation of certificate EKU and SAN (CVE-2017-7562)

• krb5: Invalid S4U2Self or S4U2Proxy request causes assertion failure (CVE-2017-11368)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.5 Release Notes linked from the References section.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2018-April/031153.html

Affected packages:
krb5-devel
krb5-libs
krb5-pkinit
krb5-server
krb5-server-ldap
krb5-workstation
libkadm5

Upstream details at:
https://access.redhat.com/errata/RHSA-2018:0666