Medium severity · published Jan 4, 2023
CVE-2023-22466
Tokio is a runtime for writing applications with Rust
5.4
CVSS
0.6%
EPSS
No
On KEV
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`.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tokio · Tokio
1.7.0 before 1.18.4; 1.19.0 before 1.20.3; 1.21.0 before 1.23.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-22466
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-22466
Patch
https://github.com/tokio-rs/tokio/pull/5336
Release Notes
https://github.com/tokio-rs/tokio/releases/tag/tokio-1.23.1
Mitigation
https://github.com/tokio-rs/tokio/security/advisories/GHSA-7rrj-xr53-82p7
Technical Description
https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-createnamedpipea#pipe_reject_remote_clients
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