Vulnerabilities in pkg:npm/deep-extend

PACKAGE
Advisory Identifier: GHSA-hr2v-3952-633q
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Advisory Summary

CVE-2018-3750 is a CRITICAL (CVSS 9.8) prototype pollution vulnerability (CWE-20: Improper Input Validation) affecting Deep extend libraries in the npm ecosystem. The issue involves prototype pollution in deep-extend. Remediation is available by upgrading affected packages to version 0.5.1.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/deep-extend

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/deep-extend. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-hr2v-3952-633q CVE-2018-3750 CRITICAL Prototype Pollution in deep-extend

CVE-2018-3750 at a Glance

CVE Identifier CVE-2018-3750
GHSA Identifier GHSA-hr2v-3952-633q
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-20: Improper Input Validation
Affected Product Deep extend
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:3.0/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-2018-3750

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

deep-extend fixed: 0.5.1 
npm install deep-extend@0.5.1
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 deep-extend

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2018-3750, inspect your project dependencies using npm:

npm ls deep-extend

Analyze the terminal output to locate any version of Deep extend in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.5.1), your application is affected.

Note: The npm ls deep-extend 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 Deep extend, 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 `deep-extend` before 0.5.1 are vulnerable to prototype pollution. ## Recommendation Update to version 0.5.1 or later.

CVE-2018-3750 Affected Deep extend Versions

1 component(s)
Fixed Versions:
0.5.1
Product / Package Ecosystem Affected Versions Fixed Version
deep-extend
npm/deep-extend
npm
< 0.5.1
0.5.1

References

NVD — CVE-2018-3750 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-3750
Security Fix Commit FIX COMMIT
https://github.com/unclechu/node-deep-extend/commit/9423fae877e2ab6b4aecc4db79a0ed63039d4703
hackerone.com/reports/311333 WEB
https://hackerone.com/reports/311333
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-hr2v-3952-633q
www.npmjs.com/advisories/612 WEB
https://www.npmjs.com/advisories/612

Frequently Asked Questions

What is CVE-2018-3750?
CVE-2018-3750 is a security vulnerability in Deep extend involving Prototype Pollution in deep-extend under CWE-20: Improper Input Validation.
Which Deep extend versions are affected?
Affected versions include releases prior to 0.5.1 across affected packages: deep-extend.
What version fixes CVE-2018-3750?
Upgrading to 0.5.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is deep-extend affected?
Yes, deep-extend is affected in releases prior to 0.5.1. Upgrade your dependency to 0.5.1 or later.
What is the CVSS score of CVE-2018-3750?
CVE-2018-3750 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2018-3750?
CVE-2018-3750 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-2018-3750?
Run the dependency tree command: 'npm ls deep-extend'. 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-hr2v-3952-633q",
  "modified" : "2021-09-14T17:26:45Z",
  "published" : "2018-10-09T00:44:59Z",
  "aliases" : [ "CVE-2018-3750" ],
  "summary" : "Prototype Pollution in deep-extend",
  "details" : "Versions of `deep-extend` before 0.5.1 are vulnerable to prototype pollution.\n\n\n## Recommendation\n\nUpdate to version 0.5.1 or later.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "deep-extend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.5.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-3750"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/unclechu/node-deep-extend/commit/9423fae877e2ab6b4aecc4db79a0ed63039d4703"
  }, {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/311333"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-hr2v-3952-633q"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/612"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:40:53Z",
    "nvd_published_at" : null
  }
}