CVE-2020-35900: Array queue Use-after-free Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-75cq-g75g-rxff
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CVSS 5.5
CWE-416
Published
Advisory Summary

CVE-2020-35900 is a MODERATE (CVSS 5.5) use-after-free vulnerability vulnerability (CWE-416: Use After Free) affecting Array queue libraries in the crates.io ecosystem. The issue involves use-after-free vulnerability in rust array-queue. Remediation is available in the latest vendor maintenance releases.

CVE-2020-35900 at a Glance

CVE Identifier CVE-2020-35900
GHSA Identifier GHSA-75cq-g75g-rxff
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-416: Use After Free
Affected Product Array queue
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 5.5

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

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

How to Fix CVE-2020-35900

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

array-queue fixed: Latest secure release 
Upgrade array-queue to Latest secure release
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 array-queue

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-35900, inspect your project dependencies for Array queue:

inspect dependencies for array-queue

Analyze the terminal output to locate any version of Array queue in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-416: Use After Free, where the product reuses or references memory after it has been freed. at some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. In Array queue, 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 array-queue crate through 2020-09-26 for Rust. A pop_back() call may lead to a use-after-free.

CVE-2020-35900 Affected Array queue Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
array-queue
 crates.io
≥ 0.3.0
≤ 0.3.3

References

NVD — CVE-2020-35900 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35900
Array queue Source Repository REPOSITORY
https://github.com/raviqqe/array-queue/issues/2
Array queue Source Repository REPOSITORY
https://github.com/raviqqe/array-queue
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0047.html

Frequently Asked Questions

What is CVE-2020-35900?
CVE-2020-35900 is a security vulnerability in Array queue involving use-after-free vulnerability in Rust array-queue under CWE-416: Use After Free.
Which Array queue versions are affected?
Affected versions include releases prior to current release patches across affected packages: array-queue.
What version fixes CVE-2020-35900?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is array-queue affected?
Yes, array-queue is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2020-35900?
CVE-2020-35900 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2020-35900?
CVE-2020-35900 is classified under CWE-416: Use After Free (The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.).
How can I check crates.io dependencies for CVE-2020-35900?
Run the dependency tree command: 'inspect dependencies for array-queue'. 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-75cq-g75g-rxff",
  "modified" : "2021-08-18T22:36:31Z",
  "published" : "2021-08-25T21:00:43Z",
  "aliases" : [ "CVE-2020-35900" ],
  "summary" : "use-after-free vulnerability in Rust array-queue",
  "details" : "An issue was discovered in the array-queue crate through 2020-09-26 for Rust. A pop_back() call may lead to a use-after-free.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "array-queue"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.3.0"
      }, {
        "last_affected" : "0.3.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-35900"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/raviqqe/array-queue/issues/2"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/raviqqe/array-queue"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0047.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-416" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-05T19:46:12Z",
    "nvd_published_at" : null
  }
}