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CVE-2023-42670

CVE-2023-42670 · Samba: ad dc busy rpc multiple listener dos

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.5 · Medium · EPSS 1.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • red hat enterprise linux 6

    No fix published

  • red hat enterprise linux 7

    No fix published

  • red hat enterprise linux 8

    No fix published

  • red hat enterprise linux 9

    No fix published

  • red hat storage 3

    No fix published

  • samba Debian:12

    Versions
    • 2:4.17.10+dfsg-0+deb12u1
    • 2:4.17.10+dfsg-0+deb12u1~bpo11+1
    • 2:4.17.11+dfsg-0+deb12u1
    • 2:4.17.12+dfsg-0+deb12u1~bpo11+1
    • 2:4.17.8+dfsg-2
    • 2:4.17.8+dfsg-2.1
    • 2:4.17.9+dfsg-0+deb12u1
    • 2:4.17.9+dfsg-0+deb12u2
    • 2:4.17.9+dfsg-0+deb12u3
    • 2:4.17.9+dfsg-0+deb12u3~bpo11+1
    Affected ranges
    • ECOSYSTEM: < 2:4.17.12+dfsg-0+deb12u1

    Update to 2:4.17.12+dfsg-0+deb12u1

  • samba Debian:13

    Affected ranges
    • ECOSYSTEM: < 2:4.19.1+dfsg-1

    Update to 2:4.19.1+dfsg-1

  • samba Debian:14

    Affected ranges
    • ECOSYSTEM: < 2:4.19.1+dfsg-1

    Update to 2:4.19.1+dfsg-1

  • samba Ubuntu:22.04:LTS

    Versions
    • 2:4.13.5+dfsg-2ubuntu2
    • 2:4.13.5+dfsg-2ubuntu3
    • 2:4.13.14+dfsg-0ubuntu1
    • 2:4.13.14+dfsg-0ubuntu2
    • 2:4.15.5~dfsg-0ubuntu1
    • 2:4.15.5~dfsg-0ubuntu2
    • 2:4.15.5~dfsg-0ubuntu4
    • 2:4.15.5~dfsg-0ubuntu5
    • 2:4.15.5~dfsg-0ubuntu5.1
    • 2:4.15.9+dfsg-0ubuntu0.2
    • 2:4.15.9+dfsg-0ubuntu0.3
    • 2:4.15.13+dfsg-0ubuntu1
    • 2:4.15.13+dfsg-0ubuntu1.1
    • 2:4.15.13+dfsg-0ubuntu1.2
    • 2:4.15.13+dfsg-0ubuntu1.3
    • 2:4.15.13+dfsg-0ubuntu1.4
    Affected ranges
    • ECOSYSTEM: < 2:4.15.13+dfsg-0ubuntu1.5

    Update to 2:4.15.13+dfsg-0ubuntu1.5

Original sources

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