CVE-2020-35882: Rocket Data Races Vulnerability

HIGH
Advisory Identifier: GHSA-8q2v-67v7-6vc6
Share
CVSS 8.1
CWE-362
Published
Advisory Summary

CVE-2020-35882 is a HIGH (CVSS 8.1) data races vulnerability (CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')) affecting Rocket libraries in the crates.io ecosystem. The issue involves data races in rocket. Remediation is available by upgrading affected packages to version 0.4.5.

CVE-2020-35882 at a Glance

CVE Identifier CVE-2020-35882
GHSA Identifier GHSA-8q2v-67v7-6vc6
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Affected Product Rocket
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 8.1

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:H/I:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2020-35882

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

rocket fixed: 0.4.5 
Upgrade rocket to 0.4.5
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 rocket

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-35882, inspect your project dependencies for Rocket:

inspect dependencies for rocket

Analyze the terminal output to locate any version of Rocket in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.4.5), 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 Rocket, 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

The affected version of rocket contains a Clone trait implementation of LocalRequest that reuses the pointer to inner Request object. This causes data race in rare combinations of APIs if the original and the cloned objects are modified at the same time.

CVE-2020-35882 Affected Rocket Versions

1 component(s)
Fixed Versions:
0.4.5
Product / Package Ecosystem Affected Versions Fixed Version
rocket
 crates.io
≥ 0.4.0
< 0.4.5
0.4.5

References

NVD — CVE-2020-35882 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35882
Rocket Source Repository REPOSITORY
https://github.com/SergioBenitez/Rocket/issues/1312
Rocket Source Repository REPOSITORY
https://github.com/SergioBenitez/Rocket
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0028.html

Frequently Asked Questions

What is CVE-2020-35882?
CVE-2020-35882 is a security vulnerability in Rocket involving Data races in rocket under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition').
Which Rocket versions are affected?
Affected versions include releases prior to 0.4.5 across affected packages: rocket.
What version fixes CVE-2020-35882?
Upgrading to 0.4.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is rocket affected?
Yes, rocket is affected in releases prior to 0.4.5. Upgrade your dependency to 0.4.5 or later.
What is the CVSS score of CVE-2020-35882?
CVE-2020-35882 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-35882?
CVE-2020-35882 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-2020-35882?
Run the dependency tree command: 'inspect dependencies for rocket'. 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-8q2v-67v7-6vc6",
  "modified" : "2023-06-13T20:48:27Z",
  "published" : "2021-08-25T20:48:07Z",
  "aliases" : [ "CVE-2020-35882" ],
  "summary" : "Data races in rocket",
  "details" : "The affected version of rocket contains a Clone trait implementation of LocalRequest that reuses the pointer to inner Request object. This causes data race in rare combinations of APIs if the original and the cloned objects are modified at the same time.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "rocket"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.4.0"
      }, {
        "fixed" : "0.4.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-35882"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/SergioBenitez/Rocket/issues/1312"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/SergioBenitez/Rocket"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0028.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-362" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T21:07:49Z",
    "nvd_published_at" : null
  }
}