CVE-2018-16853

HIGH
7.5
CVSS Score
Published: November 28, 2018 at 02:00 PM UTC
Updated: June 17, 2026 at 01:44 AM UTC
1 product affected across 1 vendorSAMBA

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Severity
HIGH7.5
Exploit prediction
EPSS 3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.7.0 ≤ v < 4.7.124.8.0 ≤ v < 4.8.74.9.0 ≤ v < 4.9.34.7.124.8.74.9.3
Affected range stops below 4.7.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.8.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/106026
x_refsource_CONFIRMIssue TrackingThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16853
Vendor Advisoryx_refsource_GENTOO
https://security.gentoo.org/glsa/202003-52

CVSS

7.5HIGHredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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