Vulnerabilities in pkg:npm/js-ini

PACKAGE
Advisory Identifier: GHSA-m939-vrfp-9v8p
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Advisory Summary

CVE-2020-28461 is a CRITICAL (CVSS 9.8) js-ini prorotype pollution when malicious vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting Js ini libraries in the npm ecosystem. The issue involves js-ini prorotype pollution when malicious ini files submitted to an application that parses it with `parse`. Remediation is available by upgrading affected packages to version 1.3.0.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/js-ini

1 Known Advisory Record(s)

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

Advisory ID CVE / NVD Severity Summary
GHSA-m939-vrfp-9v8p CVE-2020-28461 CRITICAL js-ini Prorotype Pollution when malicious INI files submitted to an application that parses it with `parse`

CVE-2020-28461 at a Glance

CVE Identifier CVE-2020-28461
GHSA Identifier GHSA-m939-vrfp-9v8p
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product Js ini
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-2020-28461

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

js-ini fixed: 1.3.0 
npm install js-ini@1.3.0
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 js-ini

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-28461, inspect your project dependencies using npm:

npm ls js-ini

Analyze the terminal output to locate any version of Js ini in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.3.0), your application is affected.

Note: The npm ls js-ini 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 Js ini, 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

This affects the package js-ini before 1.3.0. If an attacker submits a malicious INI file to an application that parses it with `parse` , they will pollute the prototype on the application. This can be exploited further depending on the context.

CVE-2020-28461 Affected Js ini Versions

1 component(s)
Fixed Versions:
1.3.0
Product / Package Ecosystem Affected Versions Fixed Version
js-ini
npm/js-ini
npm
< 1.3.0
1.3.0

References

NVD — CVE-2020-28461 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-28461
Security Fix Commit FIX COMMIT
https://github.com/Sdju/js-ini/commit/fa17efb7e3a7c9464508a254838d4c231784931e
Js ini Source Repository REPOSITORY
https://github.com/Sdju/js-ini
Js ini Security Information SECURITY
https://security.snyk.io/vuln/SNYK-JS-JSINI-1048970

Frequently Asked Questions

What is CVE-2020-28461?
CVE-2020-28461 is a security vulnerability in Js ini involving js-ini Prorotype Pollution when malicious INI files submitted to an application that parses it with `parse` under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which Js ini versions are affected?
Affected versions include releases prior to 1.3.0 across affected packages: js-ini.
What version fixes CVE-2020-28461?
Upgrading to 1.3.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is js-ini affected?
Yes, js-ini is affected in releases prior to 1.3.0. Upgrade your dependency to 1.3.0 or later.
What is the CVSS score of CVE-2020-28461?
CVE-2020-28461 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-2020-28461?
CVE-2020-28461 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-2020-28461?
Run the dependency tree command: 'npm ls js-ini'. 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-m939-vrfp-9v8p",
  "modified" : "2022-08-06T09:35:43Z",
  "published" : "2022-07-26T00:01:05Z",
  "aliases" : [ "CVE-2020-28461" ],
  "summary" : "js-ini Prorotype Pollution when malicious INI files submitted to an application that parses it with `parse`",
  "details" : "This affects the package js-ini before 1.3.0. If an attacker submits a malicious INI file to an application that parses it with `parse` , they will pollute the prototype on the application. This can be exploited further depending on the context.",
  "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" : "js-ini"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.3.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-28461"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Sdju/js-ini/commit/fa17efb7e3a7c9464508a254838d4c231784931e"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Sdju/js-ini"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-JS-JSINI-1048970"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-08-06T09:35:43Z",
    "nvd_published_at" : "2022-07-25T14:15:00Z"
  }
}