CVE-2023-42670 (GCVE-0-2023-42670)

Vulnerability from cvelistv5 – Published: 2023-11-03 07:58 – Updated: 2025-11-20 18:28
VLAI
Title
Samba: ad dc busy rpc multiple listener dos
Summary
A flaw was found in Samba. It is susceptible to a vulnerability where multiple incompatible RPC listeners can be initiated, causing disruptions in the AD DC service. When Samba's RPC server experiences a high load or unresponsiveness, servers intended for non-AD DC purposes (for example, NT4-emulation "classic DCs") can erroneously start and compete for the same unix domain sockets. This issue leads to partial query responses from the AD DC, causing issues such as "The procedure number is out of range" when using tools like Active Directory Users. This flaw allows an attacker to disrupt AD DC services.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-29 14:14 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1046 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Affected: 4.16.0 , < 4.17.12 (semver)
Affected: 4.18.0 , < 4.18.8 (semver)
Affected: 4.19.0
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat Storage 3     cpe:/a:redhat:storage:3
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Date Public
2023-10-10 00:00
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}



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