CVE-2020-7688: Mversion OS Command Injection Vulnerability

MODERATE
Advisory Identifier: GHSA-6m8p-4fxj-pgc2
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CVSS 7.8
CWE-78
Published
Advisory Summary

CVE-2020-7688 is a MODERATE (CVSS 7.8) os command injection vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Mversion libraries in the npm ecosystem. The issue involves os command injection in mversion. Remediation is available by upgrading affected packages to version 2.0.1.

CVE-2020-7688 at a Glance

CVE Identifier CVE-2020-7688
GHSA Identifier GHSA-6m8p-4fxj-pgc2
Severity MODERATE
CVSS v3.1 Base Score 7.8
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Mversion
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.8

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:H/A:H).

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 High (I:H)
Availability High (A:H)

How to Fix CVE-2020-7688

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

mversion fixed: 2.0.1 
npm install mversion@2.0.1
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 mversion

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-7688, inspect your project dependencies using npm:

npm ls mversion

Analyze the terminal output to locate any version of Mversion in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.1), your application is affected.

Note: The npm ls mversion 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-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In Mversion, 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 issue occurs because tagName user input is formatted inside the exec function is executed without any checks.

CVE-2020-7688 Affected Mversion Versions

1 component(s)
Fixed Versions:
2.0.1
Product / Package Ecosystem Affected Versions Fixed Version
mversion
npm/mversion
npm
< 2.0.1
2.0.1

References

NVD — CVE-2020-7688 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7688
Mversion Source Repository REPOSITORY
https://github.com/418sec/huntr/pull/102
Security Fix Commit FIX COMMIT
https://github.com/mikaelbr/mversion/commit/b7a8b32600e60759a7ad3921ec4a2750bf173482
snyk.io/vuln/snyk-js-mversi... WEB
https://snyk.io/vuln/SNYK-JS-MVERSION-573174

Frequently Asked Questions

What is CVE-2020-7688?
CVE-2020-7688 is a security vulnerability in Mversion involving OS Command Injection in mversion under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Mversion versions are affected?
Affected versions include releases prior to 2.0.1 across affected packages: mversion.
What version fixes CVE-2020-7688?
Upgrading to 2.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mversion affected?
Yes, mversion is affected in releases prior to 2.0.1. Upgrade your dependency to 2.0.1 or later.
What is the CVSS score of CVE-2020-7688?
CVE-2020-7688 has a CVSS v3.1 base score of 7.8 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-7688?
CVE-2020-7688 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check npm dependencies for CVE-2020-7688?
Run the dependency tree command: 'npm ls mversion'. 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-6m8p-4fxj-pgc2",
  "modified" : "2021-05-11T19:56:27Z",
  "published" : "2021-05-17T21:01:08Z",
  "aliases" : [ "CVE-2020-7688" ],
  "summary" : "OS Command Injection in mversion",
  "details" : "The issue occurs because tagName user input is formatted inside the exec function is executed without any checks.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "mversion"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.13.0"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7688"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/418sec/huntr/pull/102"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mikaelbr/mversion/commit/b7a8b32600e60759a7ad3921ec4a2750bf173482"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-MVERSION-573174"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-11T19:56:27Z",
    "nvd_published_at" : "2020-07-01T17:15:00Z"
  }
}