ALPINE-CVE-2023-42670

ALPINE-CVE-2023-42670 PUBLISHED CVSS 6.5 MEDIUM

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.

Risk Scores

CVSS v3.1

6.5

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
Alpine:v3.21	samba	4.12.0-r0, 4.8.8-r0, 4.8.7-r0
Alpine:v3.20	samba	3.5.6-r1, 4.8.8-r0, 4.8.7-r0
Alpine:v3.23	samba	4.8.8-r0, 0, 3.2.11-r0
Alpine:v3.18	samba	0, 4.8.8-r0, 4.8.7-r0
Alpine:v3.19	samba	3.2.11-r0, 4.8.8-r0, 4.8.7-r0
Alpine:v3.22	samba	0, 3.2.10-r0, 3.2.11-r0

Timeline

Nov 3, 2023 CVE Published
Dec 3, 2025 CVE Updated
Apr 30, 2026 Distribution Patch

References

https://security.alpinelinux.org/vuln/CVE-2023-42670 advisory

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