krb5-1.15.1-18.el7

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 Asianux Server 7.5 Release Notes linked from the References section.

CVE-2017-7562
** RESERVED **
This candidate has been reserved by an organization or individual that
will use it when announcing a new security problem. When the
candidate has been publicized, the details for this candidate will be provided.
CVE-2017-11368
In MIT Kerberos 5 (aka krb5) 1.7 and later, an authenticated attacker can cause a KDC assertion failure by sending invalid S4U2Self or S4U2Proxy requests.