CVE-2020-36220: Va ts Data Race Vulnerability

MODERATE
Advisory Identifier: GHSA-3hj2-hh36-hv9v
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CVSS 5.9
CWE-662 CWE-667 CWE-787
Published
Advisory Summary

CVE-2020-36220 is a MODERATE (CVSS 5.9) data race vulnerability (CWE-662: Improper Synchronization) affecting Va ts libraries in the crates.io ecosystem. The issue involves data race in va-ts. Remediation is available by upgrading affected packages to version 0.0.4.

CVE-2020-36220 at a Glance

CVE Identifier CVE-2020-36220
GHSA Identifier GHSA-3hj2-hh36-hv9v
Severity MODERATE
CVSS v3.1 Base Score 5.9
CWE Classification CWE-662: Improper Synchronization
Affected Product Va ts
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-2020-36220

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

va-ts fixed: 0.0.4 
Upgrade va-ts to 0.0.4
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 va-ts

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-36220, inspect your project dependencies for Va ts:

inspect dependencies for va-ts

Analyze the terminal output to locate any version of Va ts in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.4), 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 Va ts, 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

In the affected versions of this crate, Demuxer<T> unconditionally implemented Send with no trait bounds on T. This allows sending a non-Send type T across thread boundaries, which can cause undefined behavior like unlocking a mutex from a thread that didn't lock the mutex, or memory corruption from data race. The flaw was corrected in commit `0562cbf` by adding a T: Send bound to the Send impl for Demuxer<T>.

CVE-2020-36220 Affected Va ts Versions

1 component(s)
Fixed Versions:
0.0.4
Product / Package Ecosystem Affected Versions Fixed Version
va-ts
 crates.io
< 0.0.4
0.0.4

References

NVD — CVE-2020-36220 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36220
Va ts Source Repository REPOSITORY
https://github.com/video-audio/va-ts/issues/4
Va ts Source Repository REPOSITORY
https://github.com/video-audio/va-ts
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0114.html

Frequently Asked Questions

What is CVE-2020-36220?
CVE-2020-36220 is a security vulnerability in Va ts involving Data race in va-ts under CWE-662: Improper Synchronization.
Which Va ts versions are affected?
Affected versions include releases prior to 0.0.4 across affected packages: va-ts.
What version fixes CVE-2020-36220?
Upgrading to 0.0.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is va-ts affected?
Yes, va-ts is affected in releases prior to 0.0.4. Upgrade your dependency to 0.0.4 or later.
What is the CVSS score of CVE-2020-36220?
CVE-2020-36220 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-2020-36220?
CVE-2020-36220 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-2020-36220?
Run the dependency tree command: 'inspect dependencies for va-ts'. 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-3hj2-hh36-hv9v",
  "modified" : "2023-06-13T22:11:43Z",
  "published" : "2021-08-25T20:51:56Z",
  "aliases" : [ "CVE-2020-36220" ],
  "summary" : "Data race in va-ts",
  "details" : "In the affected versions of this crate, Demuxer<T> unconditionally implemented Send with no trait bounds on T. This allows sending a non-Send type T across thread boundaries, which can cause undefined behavior like unlocking a mutex from a thread that didn't lock the mutex, or memory corruption from data race. The flaw was corrected in commit `0562cbf` by adding a T: Send bound to the Send impl for Demuxer<T>.",
  "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" : "va-ts"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.0.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-36220"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/video-audio/va-ts/issues/4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/video-audio/va-ts"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0114.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-662", "CWE-667", "CWE-787" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T18:47:06Z",
    "nvd_published_at" : null
  }
}