Samba: ad dc busy rpc multiple listener dos
Summary
Samba: ad dc busy rpc multiple listener dos
Original description
The description as published by the source.
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.
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2023-42670 samba Fixed in: 4.18.8-r0
- Debian DEBIAN-CVE-2023-42670 samba Fixed in: 2:4.17.12+dfsg-0+deb12u1
References
- advisory access.redhat.com
- advisory github.com
- advisory nvd.nist.gov
- advisory security.netapp.com
- package github.com
- report bugzilla.redhat.com
- report bugzilla.samba.org
- web access.redhat.com
- web lists.fedoraproject.org
- web samba.org