MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to circumvent a DN containership check by supplying both a "linkdn" and "containerdn" database argument, or by supplying a DN string which is a left extension of a container DN string but is not hierarchically within the container DN.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-5730 from the MITRE CVE dictionary dictionary and NIST NVD.
| CVSS3 Base Score | 3.8 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | High |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity Impact | Low |
| Availability Impact | None |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 7 (krb5) | RHSA-2018:3071 | 2018-10-30 |
| Platform | Package | State |
|---|---|---|
| Red Hat JBoss EWS 2 | krb5 | Will not fix |
| Red Hat JBoss EAP 6 | krb5 | Will not fix |
| Red Hat JBoss Core Services 1 | krb5 | Affected |
| Red Hat Enterprise Linux 6 | krb5 | Will not fix |
| Red Hat Enterprise Linux 5 | krb5 | Will not fix |
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