CVE-2018-5730
First published: Fri Mar 02 2018(Updated: )
A flaw was found in MIT krb5 1.6 or later, an authenticated kadmin user with permission to add principals to an LDAP Kerberos database can 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. Reference: <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891869">https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891869</a> Upstream patch: <a href="https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1">https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| MIT Kerberos 5 | >=5-1.6 | |
| 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 | |
| MIT Kerberos 5 | >=5-1.6<5-1.21.2 | |
| debian/krb5 | 1.18.3-6+deb11u5 1.20.1-2+deb12u2 1.21.3-3 |
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Reference Links
- http://www.securitytracker.com/id/1042071
- https://access.redhat.com/errata/RHBA-2019:0327
- https://access.redhat.com/errata/RHSA-2018:3071
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891869
- https://bugzilla.redhat.com/show_bug.cgi?id=1551082
- https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1
- https://lists.debian.org/debian-lts-announce/2019/01/msg00020.html
- https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GK5T6JPMBHBPKS7HNGHYUUF4KKRMNSNU/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OIFUL3CPM4S5TOXTTOCQ3CUZN6XCXUTR/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1551087
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1535575
- https://security-tracker.debian.org/tracker/CVE-2018-5730
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GK5T6JPMBHBPKS7HNGHYUUF4KKRMNSNU/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OIFUL3CPM4S5TOXTTOCQ3CUZN6XCXUTR/
Frequently Asked Questions
What is CVE-2018-5730?
CVE-2018-5730 is a vulnerability in MIT krb5 1.6 or later that allows an authenticated kadmin to circumvent a DN containership check in an LDAP Kerberos database.
How severe is CVE-2018-5730?
CVE-2018-5730 has a severity score of 3.8, which is classified as medium severity.
What software is affected by CVE-2018-5730?
MIT Kerberos 5, Fedoraproject Fedora, Debian Debian Linux, and Redhat Enterprise Linux(Different versions) are affected by CVE-2018-5730.
What is the fix for CVE-2018-5730?
To fix CVE-2018-5730, update to the recommended versions: 1.17-3+deb10u4, 1.17-3+deb10u6, 1.18.3-6+deb11u4, 1.18.3-6+deb11u3, 1.20.1-2+deb12u1, or 1.20.1-5.
Where can I find more information about CVE-2018-5730?
You can find more information about CVE-2018-5730 at the following references: http://www.securitytracker.com/id/1042071, https://access.redhat.com/errata/RHBA-2019:0327, and https://access.redhat.com/errata/RHSA-2018:3071.
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