CVE-2023-22466 - CVE House
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Status published Medium CVE-2023-22466

Tokio's reject_remote_clients configuration may get dropped when creating a Windows named pipe

Vulnerability Description

Tokio is a runtime for writing applications with Rust. Starting with version 1.7.0 and prior to versions 1.18.4, 1.20.3, and 1.23.1, when configuring a Windows named pipe server, setting `pipe_mode` will reset `reject_remote_clients` to `false`. If the application has previously configured `reject_remote_clients` to `true`, this effectively undoes the configuration. Remote clients may only access the named pipe if the named pipe's associated path is accessible via a publicly shared folder (SMB). Versions 1.23.1, 1.20.3, and 1.18.4 have been patched. The fix will also be present in all releases starting from version 1.24.0. Named pipes were introduced to Tokio in version 1.7.0, so releases older than 1.7.0 are not affected. As a workaround, ensure that `pipe_mode` is set first after initializing a `ServerOptions`.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

tokio
Vulnerable Versions:
>= 1.7.0, < 1.18.4, >= 1.19.0, < 1.20.3, >= 1.21.0, < 1.23.1

Timeline

Official Publish: January 4th, 2023
Last Modified: March 10th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

Weaknesses (CWE)

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.