Reported

January 4, 2023

Issued

January 9, 2023 (last modified: February 9, 2023)

Package

tokio (crates.io)

Type

Vulnerability

Keywords

#configuration-failure

Aliases

• CVE-2023-22466
• GHSA-7rrj-xr53-82p7

References

• https://github.com/tokio-rs/tokio/security/advisories/GHSA-7rrj-xr53-82p7
• https://github.com/tokio-rs/tokio/pull/5336
• https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-createnamedpipea#pipe_reject_remote_clients

Patched

• >=1.18.4, <1.19.0
• >=1.20.3, <1.21.0
• >=1.23.1

Unaffected

• <1.7.0

Affected OSes

• windows

Description

On Windows, configuring a named pipe server with pipe_mode will force ServerOptions::reject_remote_clients as false.

This drops any intended explicit configuration for the reject_remote_clients that may have been set as true previously.

The default setting of reject_remote_clients is normally true meaning the default is also overridden as false.

Workarounds

Ensure that pipe_mode is set first after initializing a ServerOptions. For example:

let mut opts = ServerOptions::new();
opts.pipe_mode(PipeMode::Message);
opts.reject_remote_clients(true);

Advisory available under CC0-1.0 license.