CVE-2020-28423: Monorepo build Monorepo-build Command Injection Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-5vrc-7jfr-4642
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CVSS 9.8
CWE-77
Published
Advisory Summary

CVE-2020-28423 is a CRITICAL (CVSS 9.8) monorepo-build command injection vulnerability vulnerability (CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')) affecting Monorepo build libraries in the npm ecosystem. The issue involves monorepo-build command injection vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2020-28423 at a Glance

CVE Identifier CVE-2020-28423
GHSA Identifier GHSA-5vrc-7jfr-4642
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
Affected Product Monorepo build
Package Ecosystem npm
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-2020-28423

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

monorepo-build fixed: Latest secure release 
npm install monorepo-build@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: 

npm ls monorepo-build

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-28423, inspect your project dependencies using npm:

npm ls monorepo-build

Analyze the terminal output to locate any version of Monorepo build 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: The npm ls monorepo-build command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection'), where the product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. In Monorepo build, 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

A command injection vulnerability affects all versions of package monorepo-build.

CVE-2020-28423 Affected Monorepo build Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
monorepo-build
npm/monorepo-build
npm
≤ 0.1.9

References

NVD — CVE-2020-28423 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-28423
Monorepo build Security Information SECURITY
https://security.snyk.io/vuln/SNYK-JS-MONOREPOBUILD-1050392

Frequently Asked Questions

What is CVE-2020-28423?
CVE-2020-28423 is a security vulnerability in Monorepo build involving monorepo-build Command Injection vulnerability under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection').
Which Monorepo build versions are affected?
Affected versions include releases prior to current release patches across affected packages: monorepo-build.
What version fixes CVE-2020-28423?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is monorepo-build affected?
Yes, monorepo-build 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-2020-28423?
CVE-2020-28423 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-2020-28423?
CVE-2020-28423 is classified under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') (The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.).
How can I check npm dependencies for CVE-2020-28423?
Run the dependency tree command: 'npm ls monorepo-build'. 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-5vrc-7jfr-4642",
  "modified" : "2022-08-14T00:24:25Z",
  "published" : "2022-08-03T00:00:56Z",
  "aliases" : [ "CVE-2020-28423" ],
  "summary" : "monorepo-build Command Injection vulnerability",
  "details" : "A command injection vulnerability affects all versions of package monorepo-build.",
  "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" : "npm",
      "name" : "monorepo-build"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.1.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-28423"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-JS-MONOREPOBUILD-1050392"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-77" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-08-14T00:24:25Z",
    "nvd_published_at" : "2022-08-02T14:15:00Z"
  }
}