CVE-2020-36214: Multiqueue2 Data Races Vulnerability

MODERATE
Advisory Identifier: GHSA-jphw-p3m6-pj3c
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CVSS 5.9
CWE-662
Published
Advisory Summary

CVE-2020-36214 is a MODERATE (CVSS 5.9) data races vulnerability (CWE-662: Improper Synchronization) affecting Multiqueue2 libraries in the crates.io ecosystem. The issue involves data races in multiqueue2. Remediation is available by upgrading affected packages to version 0.1.7.

CVE-2020-36214 at a Glance

CVE Identifier CVE-2020-36214
GHSA Identifier GHSA-jphw-p3m6-pj3c
Severity MODERATE
CVSS v3.1 Base Score 5.9
CWE Classification CWE-662: Improper Synchronization
Affected Product Multiqueue2
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 5.9

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

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

How to Fix CVE-2020-36214

To remediate this vulnerability, upgrade all affected Multiqueue2 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

multiqueue2 fixed: 0.1.7 
Upgrade multiqueue2 to 0.1.7
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 multiqueue2

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-36214, inspect your project dependencies for Multiqueue2:

inspect dependencies for multiqueue2

Analyze the terminal output to locate any version of Multiqueue2 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.1.7), 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-662: Improper Synchronization, where the product utilizes multiple threads, processes, components, or systems to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes. In Multiqueue2, 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 unconditionally implemented Send for types used in queue implementations (InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, FutInnerRecv<RW, T>). This allows users to send non-Send types to other threads, which can lead to data race bugs or other undefined behavior. The flaw was corrected in v0.1.7 by adding T: Send bound to to the Send impl of four data types explained above.

CVE-2020-36214 Affected Multiqueue2 Versions

1 component(s)
Fixed Versions:
0.1.7
Product / Package Ecosystem Affected Versions Fixed Version
multiqueue2
 crates.io
< 0.1.7
0.1.7

References

NVD — CVE-2020-36214 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36214
Multiqueue2 Source Repository REPOSITORY
https://github.com/abbychau/multiqueue2/issues/10
Multiqueue2 Source Repository REPOSITORY
https://github.com/abbychau/multiqueue2
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0106.html

Frequently Asked Questions

What is CVE-2020-36214?
CVE-2020-36214 is a security vulnerability in Multiqueue2 involving Data races in multiqueue2 under CWE-662: Improper Synchronization.
Which Multiqueue2 versions are affected?
Affected versions include releases prior to 0.1.7 across affected packages: multiqueue2.
What version fixes CVE-2020-36214?
Upgrading to 0.1.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is multiqueue2 affected?
Yes, multiqueue2 is affected in releases prior to 0.1.7. Upgrade your dependency to 0.1.7 or later.
What is the CVSS score of CVE-2020-36214?
CVE-2020-36214 has a CVSS v3.1 base score of 5.9 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2020-36214?
CVE-2020-36214 is classified under CWE-662: Improper Synchronization (The product utilizes multiple threads, processes, components, or systems to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes.).
How can I check crates.io dependencies for CVE-2020-36214?
Run the dependency tree command: 'inspect dependencies for multiqueue2'. 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-jphw-p3m6-pj3c",
  "modified" : "2023-06-13T20:04:07Z",
  "published" : "2021-08-25T20:51:54Z",
  "aliases" : [ "CVE-2020-36214" ],
  "summary" : "Data races in multiqueue2",
  "details" : "Affected versions of this crate unconditionally implemented Send for types used in queue implementations (InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, FutInnerRecv<RW, T>).\n\nThis allows users to send non-Send types to other threads, which can lead to data race bugs or other undefined behavior.\n\nThe flaw was corrected in v0.1.7 by adding T: Send bound to to the Send impl of four data types explained above.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "multiqueue2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.1.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-36214"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/abbychau/multiqueue2/issues/10"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/abbychau/multiqueue2"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0106.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-662" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T18:47:21Z",
    "nvd_published_at" : null
  }
}