CVE-2018-3719: Mixin deep Prototype Pollution Vulnerability

HIGH
Advisory Identifier: GHSA-3mpr-hq3p-49h9
Share
CVSS 8.8
CWE-20 CWE-471
Published
Advisory Summary

CVE-2018-3719 is a HIGH (CVSS 8.8) prototype pollution vulnerability (CWE-20: Improper Input Validation) affecting Mixin deep libraries in the npm ecosystem. The issue involves prototype pollution in mixin-deep. Remediation is available by upgrading affected packages to version 1.3.1.

CVE-2018-3719 at a Glance

CVE Identifier CVE-2018-3719
GHSA Identifier GHSA-3mpr-hq3p-49h9
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-20: Improper Input Validation
Affected Product Mixin deep
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.8

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

Attack Vector Network (AV:N)
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-2018-3719

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

mixin-deep fixed: 1.3.1 
npm install mixin-deep@1.3.1
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 mixin-deep

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2018-3719, inspect your project dependencies using npm:

npm ls mixin-deep

Analyze the terminal output to locate any version of Mixin deep in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.3.1), your application is affected.

Note: The npm ls mixin-deep 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-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Mixin deep, 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

Versions of `mixin-deep` before 1.3.1 are vulnerable to prototype pollution via merging functions. ## Recommendation Update to version 1.3.1 or later.

CVE-2018-3719 Affected Mixin deep Versions

1 component(s)
Fixed Versions:
1.3.1
Product / Package Ecosystem Affected Versions Fixed Version
mixin-deep
npm/mixin-deep
npm
< 1.3.1
1.3.1

References

NVD — CVE-2018-3719 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-3719
Security Fix Commit FIX COMMIT
https://github.com/jonschlinkert/mixin-deep/commit/578b0bc5e74e14de9ef4975f504dc698796bdf9c
hackerone.com/reports/311236 WEB
https://hackerone.com/reports/311236
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-3mpr-hq3p-49h9
www.npmjs.com/advisories/578 WEB
https://www.npmjs.com/advisories/578

Frequently Asked Questions

What is CVE-2018-3719?
CVE-2018-3719 is a security vulnerability in Mixin deep involving Prototype Pollution in mixin-deep under CWE-20: Improper Input Validation.
Which Mixin deep versions are affected?
Affected versions include releases prior to 1.3.1 across affected packages: mixin-deep.
What version fixes CVE-2018-3719?
Upgrading to 1.3.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mixin-deep affected?
Yes, mixin-deep is affected in releases prior to 1.3.1. Upgrade your dependency to 1.3.1 or later.
What is the CVSS score of CVE-2018-3719?
CVE-2018-3719 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2018-3719?
CVE-2018-3719 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check npm dependencies for CVE-2018-3719?
Run the dependency tree command: 'npm ls mixin-deep'. 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-3mpr-hq3p-49h9",
  "modified" : "2023-03-01T01:32:37Z",
  "published" : "2018-07-26T15:10:54Z",
  "aliases" : [ "CVE-2018-3719" ],
  "summary" : "Prototype Pollution in mixin-deep",
  "details" : "Versions of `mixin-deep` before 1.3.1 are vulnerable to prototype pollution via merging functions.\n\n\n## Recommendation\n\nUpdate to version 1.3.1 or later.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "mixin-deep"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-3719"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jonschlinkert/mixin-deep/commit/578b0bc5e74e14de9ef4975f504dc698796bdf9c"
  }, {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/311236"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-3mpr-hq3p-49h9"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/578"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20", "CWE-471" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T20:55:36Z",
    "nvd_published_at" : "2018-06-07T02:29:00Z"
  }
}