CVE-2018-16853

High

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductSamba
PublishedNov 28, 2018
First seenNov 28, 2018

How to fix

Update
  • samba samba4.7.12, 4.8.7, 4.9.3 or later

Affected products

ProductAffected versionsFixed in
samba samba4.7.0 ≤ v < 4.7.12, 4.8.0 ≤ v < 4.8.7, 4.9.0 ≤ v < 4.9.34.7.12, 4.8.7, 4.9.3

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.