Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2018-5730

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.

Security Impact Summary

This vulnerability carries a LOW severity rating with a CVSS v3.1 score of 3.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 6 products from mit, from fedoraproject, from debian and 3 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-03-06T20:29:00.657

Last Modified

2025-05-05T14:12:56.457

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 3.8 (LOW)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:P/I:P/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.0

Impact Score

4.9

Weaknesses

Type: Primary
CWE-90

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mit	kerberos_5	< 5-1.21.2	Yes
Operating System	fedoraproject	fedora	26	Yes
Operating System	fedoraproject	fedora	27	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	redhat	enterprise_linux_desktop	7.0	Yes
Operating System	redhat	enterprise_linux_server	7.0	Yes
Operating System	redhat	enterprise_linux_workstation	7.0	Yes

References

http://www.securitytracker.com/id/1042071 Broken Link, Third Party Advisory, VDB Entry ([email protected])
https://access.redhat.com/errata/RHBA-2019:0327 Third Party Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2018:3071 Third Party Advisory ([email protected])
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891869 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1551082 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1 Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2019/01/msg00020.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GK5T6JPMBHBPKS7HNGHYUUF4KKRMNSNU/ Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OIFUL3CPM4S5TOXTTOCQ3CUZN6XCXUTR/ Mailing List, Third Party Advisory ([email protected])
http://www.securitytracker.com/id/1042071 Broken Link, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHBA-2019:0327 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2018:3071 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891869 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1551082 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2019/01/msg00020.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GK5T6JPMBHBPKS7HNGHYUUF4KKRMNSNU/ Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OIFUL3CPM4S5TOXTTOCQ3CUZN6XCXUTR/ Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For mit's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.