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.
Published: 2023-11-03
Score: 9.1 Critical
EPSS: 1.9% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-5525-1 samba security update
EUVD EUVD EUVD-2023-44586 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.
History

Mon, 14 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.01941}

epss

{'score': 0.01674}


Fri, 22 Nov 2024 12:00:00 +0000


Mon, 16 Sep 2024 15:45:00 +0000


Subscriptions

Fedoraproject Fedora
Redhat Enterprise Linux Enterprise Linux Eus Rhel Eus Rhev Hypervisor Storage
Samba Samba
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2025-11-20T19:51:41.372Z

Reserved: 2023-07-26T21:21:23.933Z

Link: CVE-2023-3961

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-11-03T13:15:08.723

Modified: 2024-11-21T08:18:24.390

Link: CVE-2023-3961

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-10-10T00:00:00Z

Links: CVE-2023-3961 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses