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 4.18.8 or later.Upgrade to Samba 4.17.12 or later.Upgrade to Samba 4.19.1 or later. | Nov 3, 2023 | Nov 3, 2023 |
| Suse | — | Upgrade samba-toolUpgrade libsamba-policy0-python3Upgrade samba-libs-python3-32bitUpgrade samba-client-32bitUpgrade samba-testUpgrade libsamba-policy-python3-develUpgrade libsamba-policy-develUpgrade samba-devel-32bitUpgrade samba-ldb-ldapUpgrade samba-gpupdateUpgrade samba-client-libs-32bitUpgrade samba-clientUpgrade libsamba-policy0-python3-32bitUpgrade ctdbUpgrade samba-python3Upgrade sambaUpgrade samba-develUpgrade samba-cephUpgrade samba-winbindUpgrade samba-client-libsUpgrade samba-docUpgrade samba-libs-32bitUpgrade samba-winbind-libsUpgrade samba-libsUpgrade samba-libs-python3Upgrade samba-winbind-libs-32bitUpgrade ctdb-pcp-pmda | Oct 12, 2023 | Oct 11, 2023 |
| Ubuntu | — | Upgrade samba | Oct 11, 2023 | Oct 10, 2023 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub