Vulnerability in Tokio
CVE-2023-22466
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`.
Vulnerability class: Dirty Pipe (CVE-2022-0847)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.006 (44.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Tokio
- Tokio-Rs Tokio — versions >= 1.7.0, < 1.18.4, >= 1.19.0, < 1.20.3, >= 1.21.0, < 1.23.1
Weakness classification (CWE)
References
- github.com/tokio-rs/tokio/security/advisories/GHSA-7rrj-xr53-82p7 (Third Party Advisory, Mitigation)
- github.com/tokio-rs/tokio/pull/5336 (Patch, Third Party Advisory)
- github.com/tokio-rs/tokio/releases/tag/tokio-1.23.1 (Third Party Advisory, Release Notes)
- learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-createnamedpipea (Technical Description, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-22466?
- CVE-2023-22466 is a medium-severity vulnerability in Tokio, classified under Improper Initialization. CVSS score: 5.4/10. Published 2023-01-04.
- How severe is CVE-2023-22466?
- Medium severity. CVSS v3 base score is 5.4 out of 10.