Insufficient Verification of Data Authenticity Affecting samba-client package, versions <2:4.17.5-0.amzn2023.0.2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
2.45% (91st percentile)

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  • Snyk IDSNYK-AMZN2023-SAMBACLIENT-6253144
  • published20 Feb 2024
  • disclosed11 Nov 2020

Introduced: 11 Nov 2020

CVE-2020-17049  (opens in a new tab)
CWE-345  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 samba-client to version 2:4.17.5-0.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2023-032.

NVD Description

Note: Versions mentioned in the description apply only to the upstream samba-client package and not the samba-client package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

A security feature bypass vulnerability exists in the way Key Distribution Center (KDC) determines if a service ticket can be used for delegation via Kerberos Constrained Delegation (KCD). To exploit the vulnerability, a compromised service that is configured to use KCD could tamper with a service ticket that is not valid for delegation to force the KDC to accept it. The update addresses this vulnerability by changing how the KDC validates service tickets used with KCD.

CVSS Scores

version 3.1