CVE-2018-5730

Name: CVE-2018-5730
Creator: NVD / NIST
Published: 2018-03-06T20:29:00.657+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.8/10EPSS 2.25%

Last modified Jun 17, 2026

CVE-2018-5730 is a low-severity vulnerability rated 3.8/10 on the CVSS scale. 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.. EPSS estimates a 2.25% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

3.8/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

EPSS Probability

2.25%

80.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-90

Affected Software

Vendor	Product	Versions
Mit	Kerberos 5	>= 5-1.6, < 5-1.21.2
Fedoraproject	Fedora	26
Fedoraproject	Fedora	27
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Workstation	7.0

References

http://www.securitytracker.com/id/1042071Broken Link, Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHBA-2019:0327Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3071Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891869Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1551082Issue Tracking, Patch, Third Party Advisory
https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00020.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/09/msg00019.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GK5T6JPMBHBPKS7HNGHYUUF4KKRMNSNU/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OIFUL3CPM4S5TOXTTOCQ3CUZN6XCXUTR/Mailing List, Third Party Advisory
http://www.securitytracker.com/id/1042071Broken Link, Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHBA-2019:0327Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3071Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891869Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1551082Issue Tracking, Patch, Third Party Advisory
https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00020.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/09/msg00019.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GK5T6JPMBHBPKS7HNGHYUUF4KKRMNSNU/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OIFUL3CPM4S5TOXTTOCQ3CUZN6XCXUTR/Mailing List, Third Party Advisory

Timeline

Published: Mar 6, 2018
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-5730?

How severe is CVE-2018-5730?

CVE-2018-5730 has a CVSS score of 3.8/10 (LOW severity). The EPSS model estimates a 2.25% probability of exploitation in the next 30 days.

How do I fix CVE-2018-5730?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-5730?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST