CVE-2020-8186: Devcert Injection And Command Injection Vulnerability

HIGH
Advisory Identifier: GHSA-4228-7qvx-f4rq
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CVSS 9.8
CWE-78 CWE-74 CWE-77
Published
Advisory Summary

CVE-2020-8186 is a HIGH (CVSS 9.8) injection and command injection vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Devcert libraries in the npm ecosystem. The issue involves injection and command injection in devcert. Remediation is available by upgrading affected packages to version 1.1.2.

CVE-2020-8186 at a Glance

CVE Identifier CVE-2020-8186
GHSA Identifier GHSA-4228-7qvx-f4rq
Severity HIGH
CVSS v3.1 Base Score 9.8
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Devcert
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-2020-8186

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

devcert fixed: 1.1.2 
npm install devcert@1.1.2
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 devcert

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-8186, inspect your project dependencies using npm:

npm ls devcert

Analyze the terminal output to locate any version of Devcert in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.2), your application is affected.

Note: The npm ls devcert 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 Devcert, 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 in the `devcert` module may lead to remote code execution when users of the module pass untrusted input to the `certificateFor` function.

CVE-2020-8186 Affected Devcert Versions

1 component(s)
Fixed Versions:
1.1.2
Product / Package Ecosystem Affected Versions Fixed Version
devcert
npm/devcert
npm
< 1.1.2
1.1.2

References

NVD — CVE-2020-8186 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8186
hackerone.com/reports/863544 WEB
https://hackerone.com/reports/863544

Frequently Asked Questions

What is CVE-2020-8186?
CVE-2020-8186 is a security vulnerability in Devcert involving Injection and Command Injection in devcert under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Devcert versions are affected?
Affected versions include releases prior to 1.1.2 across affected packages: devcert.
What version fixes CVE-2020-8186?
Upgrading to 1.1.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is devcert affected?
Yes, devcert is affected in releases prior to 1.1.2. Upgrade your dependency to 1.1.2 or later.
What is the CVSS score of CVE-2020-8186?
CVE-2020-8186 has a CVSS v3.1 base score of 9.8 (HIGH) 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-2020-8186?
CVE-2020-8186 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-2020-8186?
Run the dependency tree command: 'npm ls devcert'. 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-4228-7qvx-f4rq",
  "modified" : "2021-05-11T17:26:32Z",
  "published" : "2021-05-18T01:41:56Z",
  "aliases" : [ "CVE-2020-8186" ],
  "summary" : "Injection and Command Injection in devcert",
  "details" : "A command injection vulnerability in the `devcert` module may lead to remote code execution when users of the module pass untrusted input to the `certificateFor` function.",
  "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" : "devcert"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.1.1"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-8186"
  }, {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/863544"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-74", "CWE-77", "CWE-78" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-11T17:26:32Z",
    "nvd_published_at" : "2020-07-10T16:15:00Z"
  }
}