CVE-2019-10746: Mixin deep Prototype Pollution Vulnerability

CRITICAL
Advisory Identifier: GHSA-fhjf-83wg-r2j9
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CVSS 9.8
CWE-88
Published
Advisory Summary

CVE-2019-10746 is a CRITICAL (CVSS 9.8) prototype pollution vulnerability (CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')) 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 1.3.2, 2.0.1.

CVE-2019-10746 at a Glance

CVE Identifier CVE-2019-10746
GHSA Identifier GHSA-fhjf-83wg-r2j9
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Affected Product Mixin deep
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-2019-10746

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: 1.3.2 
npm install mixin-deep@1.3.2
mixin-deep fixed: 2.0.1 
npm install mixin-deep@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 mixin-deep

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2019-10746, 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 1.3.2), 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-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection'), where the product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. 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` prior to 2.0.1 or 1.3.2 are vulnerable to Prototype Pollution. The `mixinDeep` function fails to validate which Object properties it updates. This allows attackers to modify the prototype of Object, causing the addition or modification of an existing property on all objects. ## Recommendation If you are using `mixin-deep` 2.x, upgrade to version 2.0.1 or later. If you are using `mixin-deep` 1.x, upgrade to version 1.3.2 or later.

CVE-2019-10746 Affected Mixin deep Versions

2 component(s)
Fixed Versions:
1.3.22.0.1
Product / Package Ecosystem Affected Versions Fixed Version
mixin-deep
npm/mixin-deep
npm
< 1.3.2
1.3.2
mixin-deep
npm/mixin-deep
npm
≥ 2.0.0
< 2.0.1
All 1 versions
2.0.0
2.0.1

References

NVD — CVE-2019-10746 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-10746
Security Fix Commit FIX COMMIT
https://github.com/jonschlinkert/mixin-deep/commit/8f464c8ce9761a8c9c2b3457eaeee9d404fa7af9
Security Fix Commit FIX COMMIT
https://github.com/jonschlinkert/mixin-deep/commit/90ee1fab375fccfd9b926df718243339b4976d50
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFNIVG2XYFPZJY3DYYBJASZ7ZMKBMIJT
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UXRA365KZCUNXMU3KDH5JN5BEPNIGUKC
snyk.io/vuln/snyk-js-mixind... WEB
https://snyk.io/vuln/SNYK-JS-MIXINDEEP-450212
www.npmjs.com/advisories/1013 WEB
https://www.npmjs.com/advisories/1013
Mixin deep Security Information SECURITY
https://www.oracle.com//security-alerts/cpujul2021.html

Frequently Asked Questions

What is CVE-2019-10746?
CVE-2019-10746 is a security vulnerability in Mixin deep involving Prototype Pollution in mixin-deep under CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection').
Which Mixin deep versions are affected?
Affected versions include releases prior to 1.3.2, 2.0.1 across affected packages: mixin-deep.
What version fixes CVE-2019-10746?
Upgrading to 1.3.2, 2.0.1 (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 1.3.2, 2.0.1. Upgrade your dependency to 1.3.2, 2.0.1 or later.
What is the CVSS score of CVE-2019-10746?
CVE-2019-10746 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-2019-10746?
CVE-2019-10746 is classified under CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') (The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.).
How can I check npm dependencies for CVE-2019-10746?
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-fhjf-83wg-r2j9",
  "modified" : "2023-11-29T20:55:21Z",
  "published" : "2019-08-27T17:42:33Z",
  "aliases" : [ "CVE-2019-10746" ],
  "summary" : "Prototype Pollution in mixin-deep",
  "details" : "Versions of `mixin-deep` prior to 2.0.1 or 1.3.2 are vulnerable to Prototype Pollution. The `mixinDeep` function fails to validate which Object properties it updates. This allows attackers to modify the prototype of Object, causing the addition or modification of an existing property on all objects.\n\n\n## Recommendation\n\nIf you are using `mixin-deep` 2.x, upgrade to version 2.0.1 or later.\nIf you are using `mixin-deep` 1.x, upgrade to version 1.3.2 or later.",
  "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" : "mixin-deep"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.3.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "mixin-deep"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.0.1"
      } ]
    } ],
    "versions" : [ "2.0.0" ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-10746"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jonschlinkert/mixin-deep/commit/8f464c8ce9761a8c9c2b3457eaeee9d404fa7af9"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jonschlinkert/mixin-deep/commit/90ee1fab375fccfd9b926df718243339b4976d50"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFNIVG2XYFPZJY3DYYBJASZ7ZMKBMIJT"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UXRA365KZCUNXMU3KDH5JN5BEPNIGUKC"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-MIXINDEEP-450212"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1013"
  }, {
    "type" : "WEB",
    "url" : "https://www.oracle.com//security-alerts/cpujul2021.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-88" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-08-27T17:21:43Z",
    "nvd_published_at" : "2019-08-23T17:15:00Z"
  }
}