CVE-2020-36206: Rusb Data Races Vulnerability

HIGH
Advisory Identifier: GHSA-9mxw-4856-9cm5
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CVSS 7.0
CWE-662 CWE-787
Published
Advisory Summary

CVE-2020-36206 is a HIGH (CVSS 7.0) data races vulnerability (CWE-662: Improper Synchronization) affecting Rusb libraries in the crates.io ecosystem. The issue involves data races in rusb. Remediation is available by upgrading affected packages to version 0.7.0.

CVE-2020-36206 at a Glance

CVE Identifier CVE-2020-36206
GHSA Identifier GHSA-9mxw-4856-9cm5
Severity HIGH
CVSS v3.1 Base Score 7.0
CWE Classification CWE-662: Improper Synchronization
Affected Product Rusb
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 7.0

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

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

How to Fix CVE-2020-36206

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

rusb fixed: 0.7.0 
Upgrade rusb to 0.7.0
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 rusb

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-36206, inspect your project dependencies for Rusb:

inspect dependencies for rusb

Analyze the terminal output to locate any version of Rusb in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.7.0), 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-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 Rusb, 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 rusb did not require UsbContext to implement Send and Sync. However, through Device and DeviceHandle it is possible to use UsbContexts across threads. This issue allows non-thread safe UsbContext types to be used concurrently leading to data races and memory corruption. The issue was fixed by adding Send and Sync bounds to UsbContext.

CVE-2020-36206 Affected Rusb Versions

1 component(s)
Fixed Versions:
0.7.0
Product / Package Ecosystem Affected Versions Fixed Version
rusb
 crates.io
< 0.7.0
0.7.0

References

NVD — CVE-2020-36206 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36206
Rusb Source Repository REPOSITORY
https://github.com/a1ien/rusb/issues/44
Rusb Source Repository REPOSITORY
https://github.com/a1ien/rusb
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0098.html

Frequently Asked Questions

What is CVE-2020-36206?
CVE-2020-36206 is a security vulnerability in Rusb involving Data races in rusb under CWE-662: Improper Synchronization.
Which Rusb versions are affected?
Affected versions include releases prior to 0.7.0 across affected packages: rusb.
What version fixes CVE-2020-36206?
Upgrading to 0.7.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is rusb affected?
Yes, rusb is affected in releases prior to 0.7.0. Upgrade your dependency to 0.7.0 or later.
What is the CVSS score of CVE-2020-36206?
CVE-2020-36206 has a CVSS v3.1 base score of 7.0 (HIGH) with vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-36206?
CVE-2020-36206 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-2020-36206?
Run the dependency tree command: 'inspect dependencies for rusb'. 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-9mxw-4856-9cm5",
  "modified" : "2023-06-13T20:46:48Z",
  "published" : "2021-08-25T20:50:51Z",
  "aliases" : [ "CVE-2020-36206" ],
  "summary" : "Data races in rusb",
  "details" : "Affected versions of rusb did not require UsbContext to implement Send and Sync. However, through Device and DeviceHandle it is possible to use UsbContexts across threads. This issue allows non-thread safe UsbContext types to be used concurrently leading to data races and memory corruption. The issue was fixed by adding Send and Sync bounds to UsbContext.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "rusb"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.7.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-36206"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/a1ien/rusb/issues/44"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/a1ien/rusb"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0098.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-662", "CWE-787" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T18:51:05Z",
    "nvd_published_at" : null
  }
}