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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2023-3961

Samba: smbd allows client access to unix domain sockets on the file system as root

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Status
Published
Published
Updated
Assigning organization
redhat

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 0:4.18.6-2.el8_9 to < *unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 0:4.18.6-2.el8_9 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support

Default version status: affected

  • 0:4.15.5-13.el8_6 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support

Default version status: affected

  • 0:4.17.5-4.el8_8 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:4.18.6-101.el9_3 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:4.18.6-101.el9_3 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support

Default version status: affected

  • 0:4.15.5-111.el9_0 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support

Default version status: affected

  • 0:4.17.5-104.el9_2 to < *unaffected

Red Hat Red Hat Virtualization 4 for Red Hat Enterprise Linux 8

Default version status: affected

  • 0:4.15.5-13.el8_6 to < *unaffected

Red Hat Red Hat Enterprise Linux 6

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 6

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 7

Default version status: unaffected

Red Hat Red Hat Storage 3

Default version status: unknown

References