CVE-2020-36470: Disrustor Data Race Vulnerability

MODERATE
Advisory Identifier: GHSA-w9r2-qrpm-4rmj
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CVSS 5.9
CWE-362
Published
Advisory Summary

CVE-2020-36470 is a MODERATE (CVSS 5.9) data race vulnerability (CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')) affecting Disrustor libraries in the crates.io ecosystem. The issue involves data race in disrustor. Remediation is available by upgrading affected packages to version 0.3.0.

CVE-2020-36470 at a Glance

CVE Identifier CVE-2020-36470
GHSA Identifier GHSA-w9r2-qrpm-4rmj
Severity MODERATE
CVSS v3.1 Base Score 5.9
CWE Classification CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Affected Product Disrustor
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-2020-36470

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

disrustor fixed: 0.3.0 
Upgrade disrustor to 0.3.0
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 disrustor

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-36470, inspect your project dependencies for Disrustor:

inspect dependencies for disrustor

Analyze the terminal output to locate any version of Disrustor in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.3.0), 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-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), where the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. In Disrustor, 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

An issue was discovered in the disrustor crate through 2020-12-17 for Rust. RingBuffer doe not properly limit the number of mutable references.

CVE-2020-36470 Affected Disrustor Versions

1 component(s)
Fixed Versions:
0.3.0
Product / Package Ecosystem Affected Versions Fixed Version
disrustor
 crates.io
< 0.3.0
0.3.0

References

NVD — CVE-2020-36470 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36470
Disrustor Source Repository REPOSITORY
https://github.com/sklose/disrustor/issues/1
Security Fix Commit FIX COMMIT
https://github.com/sklose/disrustor/commit/0be7aed40adbac51a50a3b95c815349a40d79ca6
Disrustor Source Repository REPOSITORY
https://github.com/sklose/disrustor
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0150.html

Frequently Asked Questions

What is CVE-2020-36470?
CVE-2020-36470 is a security vulnerability in Disrustor involving Data race in disrustor under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition').
Which Disrustor versions are affected?
Affected versions include releases prior to 0.3.0 across affected packages: disrustor.
What version fixes CVE-2020-36470?
Upgrading to 0.3.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is disrustor affected?
Yes, disrustor is affected in releases prior to 0.3.0. Upgrade your dependency to 0.3.0 or later.
What is the CVSS score of CVE-2020-36470?
CVE-2020-36470 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-2020-36470?
CVE-2020-36470 is classified under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.).
How can I check crates.io dependencies for CVE-2020-36470?
Run the dependency tree command: 'inspect dependencies for disrustor'. 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-w9r2-qrpm-4rmj",
  "modified" : "2023-01-24T19:02:15Z",
  "published" : "2021-08-25T20:56:59Z",
  "aliases" : [ "CVE-2020-36470" ],
  "summary" : "Data race in disrustor",
  "details" : "An issue was discovered in the disrustor crate through 2020-12-17 for Rust. RingBuffer doe not properly limit the number of mutable references.",
  "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" : "disrustor"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.3.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-36470"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sklose/disrustor/issues/1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sklose/disrustor/commit/0be7aed40adbac51a50a3b95c815349a40d79ca6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/sklose/disrustor"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0150.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-362" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-18T20:36:20Z",
    "nvd_published_at" : "2021-08-08T06:15:00Z"
  }
}