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CVE-2016-2125

Published: 19 December 2016

It was found that Samba before versions 4.5.3, 4.4.8, 4.3.13 always requested forwardable tickets when using Kerberos authentication. A service to which Samba authenticated using Kerberos could subsequently use the ticket to impersonate Samba to other services or domain users.

From the Ubuntu security team

Simo Sorce discovered that that Samba clients always requested a forwardable ticket when using Kerberos authentication. An attacker could use this to impersonate an authenticated user or service.

Priority

Medium

CVSS 3 base score: 6.5

Status

Package Release Status
samba
Launchpad, Ubuntu, Debian
precise
Released (2:3.6.25-0ubuntu0.12.04.5)
trusty
Released (2:4.3.11+dfsg-0ubuntu0.14.04.4)
upstream Needs triage

xenial
Released (2:4.3.11+dfsg-0ubuntu0.16.04.3)
yakkety
Released (2:4.4.5+dfsg-2ubuntu5.2)
zesty
Released (2:4.4.5+dfsg-2ubuntu7)
samba4
Launchpad, Ubuntu, Debian
precise Does not exist
(precise was needed)
trusty Does not exist

upstream Needs triage

xenial Does not exist

yakkety Does not exist

zesty Does not exist