Improper Authentication Affecting libsmbldap2-32bit package, versions <4.9.5+git.224.86a8e66adea-3.18.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.34% (71st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-SLES151-LIBSMBLDAP232BIT-2723279
  • published14 Apr 2022
  • disclosed17 Dec 2019

Introduced: 17 Dec 2019

CVE-2019-14870  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade SLES:15.1 libsmbldap2-32bit to version 4.9.5+git.224.86a8e66adea-3.18.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsmbldap2-32bit package and not the libsmbldap2-32bit package as distributed by SLES. See How to fix? for SLES:15.1 relevant fixed versions and status.

All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set.

CVSS Scores

version 3.1