CVE-2023-3961

Updated: 2024-01-02 19:31:23.527592

Description:

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.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x 0
CVSS Version 3.x CRITICAL 9.8

Status

OS name Project name Version Score Severity Status Errata Last updated
CentOS 6 ELS samba 3.6.23 9.8 CRITICAL Released CLSA-2023:1700852317 2023-12-05 13:09:42
CentOS 8.4 ELS samba 4.13.3-5 9.8 CRITICAL Released CLSA-2023:1700833977 2023-11-24 10:09:14
CentOS 8.5 ELS samba 4.14.5-7 9.8 CRITICAL Released CLSA-2023:1700834265 2023-11-24 10:09:13
CloudLinux 6 ELS samba 3.6.23 9.8 CRITICAL Released CLSA-2023:1700852143 2023-12-05 16:10:39
Oracle Linux 6 ELS samba 3.6.23 9.8 CRITICAL Released CLSA-2023:1700834882 2023-11-24 10:09:12
Ubuntu 16.04 ELS samba 4.3.11 9.8 CRITICAL Released CLSA-2023:1700835091 2023-11-24 10:09:10
Ubuntu 18.04 ELS samba 4.7.6 9.8 CRITICAL Released CLSA-2023:1700835779 2023-11-24 10:09:14