GHSA-x4mq-m75f-mx8m: Windows Delegate Functions Are Missing `Send` Vulnerability

CRITICAL
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CVSS 9.8
CWE-820
Published
Advisory Summary

GHSA-x4mq-m75f-mx8m is a CRITICAL (CVSS 9.8) delegate functions are missing `send` vulnerability (CWE-820: Missing Synchronization) affecting Windows libraries in the crates.io ecosystem. The issue involves delegate functions are missing `send` bound. Remediation is available by upgrading affected packages to version 0.32.0.

GHSA-x4mq-m75f-mx8m at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-x4mq-m75f-mx8m
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-820: Missing Synchronization
Affected Product Windows
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix GHSA-x4mq-m75f-mx8m

To remediate this vulnerability, upgrade all affected Windows dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

windows fixed: 0.32.0 
Upgrade windows to 0.32.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for windows

How to Check if You Are Affected

To determine whether your application is affected by GHSA-x4mq-m75f-mx8m, inspect your project dependencies for Windows:

inspect dependencies for windows

Analyze the terminal output to locate any version of Windows in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.32.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-820: Missing Synchronization, where the product utilizes a shared resource in a concurrent manner but does not attempt to synchronize access to the resource. In Windows, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Affected versions of this crate did not require event handlers to have `Send` bound despite there being no guarantee of them being called on any particular thread, which can potentially lead to data races and undefined behavior. The flaw was corrected in commit [afe3252](https://github.com/microsoft/windows-rs/commit/afe32525c22209aa8f632a0f4ad607863b51796a) by adding `Send` bounds.

GHSA-x4mq-m75f-mx8m Affected Windows Versions

1 component(s)
Fixed Versions:
0.32.0
Product / Package Ecosystem Affected Versions Fixed Version
windows
 crates.io
≥ 0.1.2
< 0.32.0
0.32.0

References

Windows Source Repository REPOSITORY
https://github.com/microsoft/windows-rs/issues/1409
Security Fix Commit FIX COMMIT
https://github.com/microsoft/windows-rs/commit/afe32525c22209aa8f632a0f4ad607863b51796a
Windows Source Repository REPOSITORY
https://github.com/microsoft/windows-rs
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2022-0008.html

Frequently Asked Questions

What is GHSA-x4mq-m75f-mx8m?
GHSA-x4mq-m75f-mx8m is a security vulnerability in Windows involving Delegate functions are missing `Send` bound under CWE-820: Missing Synchronization.
Which Windows versions are affected?
Affected versions include releases prior to 0.32.0 across affected packages: windows.
What version fixes GHSA-x4mq-m75f-mx8m?
Upgrading to 0.32.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is windows affected?
Yes, windows is affected in releases prior to 0.32.0. Upgrade your dependency to 0.32.0 or later.
What is the CVSS score of GHSA-x4mq-m75f-mx8m?
GHSA-x4mq-m75f-mx8m has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with GHSA-x4mq-m75f-mx8m?
GHSA-x4mq-m75f-mx8m is classified under CWE-820: Missing Synchronization (The product utilizes a shared resource in a concurrent manner but does not attempt to synchronize access to the resource.).
How can I check crates.io dependencies for GHSA-x4mq-m75f-mx8m?
Run the dependency tree command: 'inspect dependencies for windows'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-x4mq-m75f-mx8m",
  "modified" : "2022-07-05T21:26:36Z",
  "published" : "2022-06-17T00:30:33Z",
  "aliases" : [ ],
  "summary" : "Delegate functions are missing `Send` bound",
  "details" : "Affected versions of this crate did not require event handlers to have `Send` bound despite there being no guarantee of them being called on any particular thread, which can potentially lead to data races and undefined behavior.\n\nThe flaw was corrected in commit [afe3252](https://github.com/microsoft/windows-rs/commit/afe32525c22209aa8f632a0f4ad607863b51796a) by adding `Send` bounds.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "windows"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.1.2"
      }, {
        "fixed" : "0.32.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/microsoft/windows-rs/issues/1409"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/microsoft/windows-rs/commit/afe32525c22209aa8f632a0f4ad607863b51796a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/microsoft/windows-rs"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2022-0008.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-820" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-17T00:30:33Z",
    "nvd_published_at" : null
  }
}