Description
This update fixes the security issues below.
A path traversal vulnerability was identified in Samba when processing
client pipe names connecting to Unix domain sockets within a private
directory. Samba typically uses this mechanism to connect SMB clients to
remote procedure call (RPC) services like SAMR LSA or SPOOLSS, which
Samba initiates on demand. However, due to inadequate sanitization of
incoming client pipe names, allowing a client to send a pipe name
containing Unix directory traversal characters (../). This could result
in SMB clients connecting as root to Unix domain sockets outside the
private directory. If an attacker or client managed to send a pipe name
resolving to an external service using an existing Unix domain socket,
it could potentially lead to unauthorized access to the service and
consequential adverse events, including compromise or service crashes.
(CVE-2023-3961)