CVE-2023-42670 | BDVDB-2026-216017 Detail
Red HatRed Hat Enterprise Linux 6
Description#
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.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.
Weaknesses#
- CWE-400 Uncontrolled Resource Consumption
References#
- https://access.redhat.com/security/cve/CVE-2023-42670
- https://bugzilla.redhat.com/show_bug.cgi?id=2241885
- https://bugzilla.samba.org/show_bug.cgi?id=15473
- https://www.samba.org/samba/security/CVE-2023-42670.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZUMVALLFFDFC53JZMUWA6HPD7HUGAP5I/
- https://security.netapp.com/advisory/ntap-20231124-0002/
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.