The remote Ubuntu 23.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6425-3 advisory.

  - The vulnerability exists due to an error in the way SMB protocol implementation in Samba handles file     operations. A remote user can request read-only access to files and then truncate them to 0 bytes by     opening files with OVERWRITE disposition when using the acl_xattr Samba VFS module with the smb.conf     setting acl_xattr:ignore system acls = yes. (CVE-2023-4091)

  - The vulnerability exists due to a design error in Samba's implementation of the DirSync control, which can     allow replication of critical domain passwords and secrets by Active Directory accounts authorized to do     some replication, but not to replicate sensitive attributes. A remote user can obtain sensitive     information from the AD DC and compromise the Active Directory. (CVE-2023-4154)

  - The vulnerability exists due to inclusion of the rpcecho server into production build, which can call     sleep() on AD DC. A remote user can request the server block using the rpcecho server and perform a     denial of service (DoS) attack. (CVE-2023-42669)

  - The vulnerability exists due to improper management of internal resources within the application when     Samba RPC server is under load, which can lead to incorrect start of servers not built for the AD DC. A     remote user can cause a high load to Samba RPC server and perform a denial of service (DoS) attack.
    (CVE-2023-42670)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Ubuntu 23.10 : Samba vulnerabilities (USN-6425-3)

medium Nessus Plugin ID 183272

Version 1.2