CVE-2018-16853

Description

Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.78% Top 15%
Vendor Advisory gentoo.org Vendor Advisory samba.org
Affected: [UNKNOWN] samba
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16853 issue tracking third party advisory
https://www.samba.org/samba/security/CVE-2018-16853.html vendor advisory
http://www.securityfocus.com/bid/106026 vdb entry third party advisory
https://security.netapp.com/advisory/ntap-20181127-0001/ third party advisory
https://security.gentoo.org/glsa/202003-52 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-16853?
CVE-2018-16853 has been scored as a high severity vulnerability.
How to fix CVE-2018-16853?
To fix CVE-2018-16853, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-16853 being actively exploited in the wild?
It is possible that CVE-2018-16853 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-16853?
CVE-2018-16853 affects [UNKNOWN] samba.
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