Uncontrolled Resource Consumption ('Resource Exhaustion') Affecting samba package, versions [4.16.0,4.17.12)[4.18.0,4.18.8)[4.19.0,4.19.1)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.13% (50th percentile)

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  • Snyk IDSNYK-UNMANAGED-SAMBA-5961570
  • published12 Oct 2023
  • disclosed10 Oct 2023
  • creditUnknown

Introduced: 10 Oct 2023

CVE-2023-42670  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade samba to version 4.17.12, 4.18.8, 4.19.1 or higher.

Overview

Affected versions of this package are vulnerable to Uncontrolled Resource Consumption ('Resource Exhaustion') when the AD DC Busy RPC function is under high load or unresponsive, servers intended for non-AD DC purposes can erroneously start and compete for the same unix domain sockets. An attacker can disrupt AD DC services by initiating multiple incompatible RPC listeners, leading to partial query responses and issues such as "The procedure number is out of range" when using tools like Active Directory Users. This is only exploitable if the RPC server experiences a high load or unresponsiveness.

CVSS Scores

version 3.1