CVE-2021-23192 Affecting samba-dc-provision package, versions <2:4.15.5-0.amzn2022


Severity

Recommended
critical

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.16% (54th percentile)

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  • Snyk IDSNYK-AMZN2022-SAMBADCPROVISION-2996067
  • published29 Aug 2022
  • disclosed2 Mar 2022

Introduced: 2 Mar 2022

CVE-2021-23192  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2022 samba-dc-provision to version 2:4.15.5-0.amzn2022 or higher.
This issue was patched in ALAS2022-2022-022.

NVD Description

Note: Versions mentioned in the description apply only to the upstream samba-dc-provision package and not the samba-dc-provision package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2022 relevant fixed versions and status.

A flaw was found in the way samba implemented DCE/RPC. If a client to a Samba server sent a very large DCE/RPC request, and chose to fragment it, an attacker could replace later fragments with their own data, bypassing the signature requirements.

CVSS Base Scores

version 3.1