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 Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade samba | Mar 26, 2024 | Nov 3, 2023 |
| Debian | — | Upgrade samba | Oct 19, 2023 | Oct 19, 2023 |
| Gentoo Linux | — | Upgrade net-fs/samba. | Feb 21, 2024 | Nov 3, 2023 |
| Samba | — | Upgrade to Samba 4.19.1 or later.Upgrade to Samba 4.17.12 or later.Upgrade to Samba 4.18.8 or later. | Nov 3, 2023 | Nov 3, 2023 |
| Suse | — | Upgrade samba-libs-python3-32bitUpgrade libsamba-policy-python3-develUpgrade libsamba-policy0-python3Upgrade samba-ldb-ldapUpgrade libsamba-policy-develUpgrade samba-client-32bitUpgrade samba-devel-32bitUpgrade samba-gpupdateUpgrade samba-toolUpgrade samba-clientUpgrade samba-client-libs-32bitUpgrade samba-testUpgrade samba-python3Upgrade samba-libs-python3Upgrade samba-winbind-libsUpgrade samba-winbindUpgrade samba-docUpgrade samba-develUpgrade samba-client-libsUpgrade samba-cephUpgrade samba-libs-32bitUpgrade libsamba-policy0-python3-32bitUpgrade samba-winbind-libs-32bitUpgrade sambaUpgrade ctdbUpgrade samba-libsUpgrade ctdb-pcp-pmda | Oct 12, 2023 | Oct 11, 2023 |
| Ubuntu | — | Upgrade samba | Oct 11, 2023 | Oct 10, 2023 |
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