ctdb: A flaw was found in Samba
CVE-2023-42670 is fixed in 16 products on 1 platform, first by ctdb 2:4.15.13+dfsg-0ubuntu1.5, released October 9, 2023. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ctdb · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | ctdb 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| libnss-winbind · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | libnss-winbind 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| libpam-winbind · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | libpam-winbind 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| libsmbclient · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | libsmbclient 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| libwbclient0 · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | libwbclient0 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| python3-samba · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | python3-samba 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| registry-tools · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | registry-tools 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| samba · Debian 12.15 (bookworm) | 2:4.17.12+dfsg-0+deb12u1 | DEBIAN-CVE-2023-42670 | Nov 3, 2023 |
| samba · Debian 13.5 (trixie) | 2:4.19.1+dfsg-1 | DEBIAN-CVE-2023-42670 | Nov 3, 2023 |
| samba · Debian 14 | 2:4.19.1+dfsg-1 | DEBIAN-CVE-2023-42670 | Nov 3, 2023 |
| samba · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | samba 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| samba-common · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | samba-common 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| samba-common-bin · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | samba-common-bin 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| samba-dsdb-modules · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | samba-dsdb-modules 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| samba-libs · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | samba-libs 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| samba-testsuite · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | samba-testsuite 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| samba-vfs-modules · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | samba-vfs-modules 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| smbclient · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | smbclient 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
| winbind · Ubuntu 22.04.1 LTS (jammy) | 2:4.15.13+dfsg-0ubuntu1.5 | winbind 2:4.15.13+dfsg-0ubuntu1.5 | Oct 9, 2023 |
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