CVE-2020-7639: @eivifj/dot Eivindfjeldstad-dot Contains Prototype Pollution Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-wfwq-xc57-fq7v
Share
CVSS 5.3
CWE-1321 CWE-915
Published
Advisory Summary

CVE-2020-7639 is a MODERATE (CVSS 5.3) eivindfjeldstad-dot contains prototype pollution vulnerability vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting @eivifj/dot libraries in the npm ecosystem. The issue involves eivindfjeldstad-dot contains prototype pollution vulnerability. Remediation is available by upgrading affected packages to version 1.0.3.

CVE-2020-7639 at a Glance

CVE Identifier CVE-2020-7639
GHSA Identifier GHSA-wfwq-xc57-fq7v
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product @eivifj/dot
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:N/I:L/A:N).

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 None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2020-7639

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

@eivifj/dot fixed: 1.0.3 
npm install @eivifj/dot@1.0.3
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 @eivifj/dot

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-7639, inspect your project dependencies using npm:

npm ls @eivifj/dot

Analyze the terminal output to locate any version of @eivifj/dot in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.3), your application is affected.

Note: The npm ls @eivifj/dot 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-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'), where the product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. In @eivifj/dot, 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

eivindfjeldstad-dot below 1.0.3 is vulnerable to Prototype Pollution.The function 'set' could be tricked into adding or modifying properties of 'Object.prototype' using a '__proto__' payload.

CVE-2020-7639 Affected @eivifj/dot Versions

1 component(s)
Fixed Versions:
1.0.3
Product / Package Ecosystem Affected Versions Fixed Version
@eivifj/dot
npm/@eivifj/dot
npm
< 1.0.3
1.0.3

References

NVD — CVE-2020-7639 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7639
Security Fix Commit FIX COMMIT
https://github.com/eivindfjeldstad/dot/commit/774e4b0c97ca35d2ae40df2cd14428d37dd07a0b
@eivifj/dot Source Repository REPOSITORY
https://github.com/eivindfjeldstad/dot
snyk.io/vuln/snyk-js-eivifj... WEB
https://snyk.io/vuln/SNYK-JS-EIVIFJDOT-564435

Frequently Asked Questions

What is CVE-2020-7639?
CVE-2020-7639 is a security vulnerability in @eivifj/dot involving eivindfjeldstad-dot contains prototype pollution vulnerability under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which @eivifj/dot versions are affected?
Affected versions include releases prior to 1.0.3 across affected packages: @eivifj/dot.
What version fixes CVE-2020-7639?
Upgrading to 1.0.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is @eivifj/dot affected?
Yes, @eivifj/dot is affected in releases prior to 1.0.3. Upgrade your dependency to 1.0.3 or later.
What is the CVSS score of CVE-2020-7639?
CVE-2020-7639 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2020-7639?
CVE-2020-7639 is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.).
How can I check npm dependencies for CVE-2020-7639?
Run the dependency tree command: 'npm ls @eivifj/dot'. 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-wfwq-xc57-fq7v",
  "modified" : "2023-07-13T17:59:31Z",
  "published" : "2021-05-25T15:59:14Z",
  "aliases" : [ "CVE-2020-7639" ],
  "summary" : "eivindfjeldstad-dot contains prototype pollution vulnerability",
  "details" : "eivindfjeldstad-dot below 1.0.3 is vulnerable to Prototype Pollution.The function 'set' could be tricked into adding or modifying properties of 'Object.prototype' using a '__proto__' payload.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@eivifj/dot"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7639"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/eivindfjeldstad/dot/commit/774e4b0c97ca35d2ae40df2cd14428d37dd07a0b"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/eivindfjeldstad/dot"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-EIVIFJDOT-564435"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321", "CWE-915" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-09-07T23:58:45Z",
    "nvd_published_at" : "2020-04-06T13:15:00Z"
  }
}