CVE-2020-36452: Array tools Memory Corruption Vulnerability

CRITICAL
Advisory Identifier: GHSA-6wp2-fw3v-mfmc
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CVSS 9.8
CWE-909 CWE-908
Published
Advisory Summary

CVE-2020-36452 is a CRITICAL (CVSS 9.8) memory corruption vulnerability (CWE-909: Missing Initialization of Resource) affecting Array tools libraries in the crates.io ecosystem. The issue involves memory corruption in array-tools. Remediation is available by upgrading affected packages to version 0.3.2.

CVE-2020-36452 at a Glance

CVE Identifier CVE-2020-36452
GHSA Identifier GHSA-6wp2-fw3v-mfmc
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-909: Missing Initialization of Resource
Affected Product Array tools
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
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-2020-36452

To remediate this vulnerability, upgrade all affected Array tools 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-tools fixed: 0.3.2 
Upgrade array-tools to 0.3.2
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-tools

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-36452, inspect your project dependencies for Array tools:

inspect dependencies for array-tools

Analyze the terminal output to locate any version of Array tools in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.3.2), 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-909: Missing Initialization of Resource, where the product does not initialize a critical resource. In Array tools, 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-tools crate before 0.3.2 for Rust. Affected versions of this crate don't guard against panics, so that partially uninitialized buffer is dropped when user-provided `T::clone()` panics in `FixedCapacityDequeLike<T, A>::clone()`. This causes memory corruption.

CVE-2020-36452 Affected Array tools Versions

1 component(s)
Fixed Versions:
0.3.2
Product / Package Ecosystem Affected Versions Fixed Version
array-tools
 crates.io
< 0.3.2
0.3.2

References

NVD — CVE-2020-36452 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36452
Array tools Source Repository REPOSITORY
https://github.com/L117/array-tools/issues/2
Array tools Source Repository REPOSITORY
https://github.com/L117/array-tools
raw.githubusercontent.com/rustsec/advisory-db... WEB
https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/array-tools/RUSTSEC-2020-0132.md
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0132.html

Frequently Asked Questions

What is CVE-2020-36452?
CVE-2020-36452 is a security vulnerability in Array tools involving Memory corruption in array-tools under CWE-909: Missing Initialization of Resource.
Which Array tools versions are affected?
Affected versions include releases prior to 0.3.2 across affected packages: array-tools.
What version fixes CVE-2020-36452?
Upgrading to 0.3.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is array-tools affected?
Yes, array-tools is affected in releases prior to 0.3.2. Upgrade your dependency to 0.3.2 or later.
What is the CVSS score of CVE-2020-36452?
CVE-2020-36452 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-36452?
CVE-2020-36452 is classified under CWE-909: Missing Initialization of Resource (The product does not initialize a critical resource.).
How can I check crates.io dependencies for CVE-2020-36452?
Run the dependency tree command: 'inspect dependencies for array-tools'. 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-6wp2-fw3v-mfmc",
  "modified" : "2021-08-24T18:54:26Z",
  "published" : "2021-08-25T20:57:19Z",
  "aliases" : [ "CVE-2020-36452" ],
  "summary" : "Memory corruption in array-tools",
  "details" : "An issue was discovered in the array-tools crate before 0.3.2 for Rust. Affected versions of this crate don't guard against panics, so that partially uninitialized buffer is dropped when user-provided `T::clone()` panics in `FixedCapacityDequeLike<T, A>::clone()`. This causes memory corruption.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "array-tools"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.3.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-36452"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/L117/array-tools/issues/2"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/L117/array-tools"
  }, {
    "type" : "WEB",
    "url" : "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/array-tools/RUSTSEC-2020-0132.md"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0132.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-908", "CWE-909" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-18T20:24:55Z",
    "nvd_published_at" : "2021-08-08T06:15:00Z"
  }
}