Vulnerabilities in pkg:npm/eslint-utils

PACKAGE
Advisory Identifier: GHSA-3gx7-xhv7-5mx3
Share
Advisory Summary

CVE-2019-15657 is a CRITICAL (CVSS 9.8) arbitrary code execution vulnerability (CWE-20: Improper Input Validation) affecting Eslint utils libraries in the npm ecosystem. The issue involves arbitrary code execution in eslint-utils. Remediation is available by upgrading affected packages to version 1.4.1.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/eslint-utils

1 Known Advisory Record(s)

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

Advisory ID CVE / NVD Severity Summary
GHSA-3gx7-xhv7-5mx3 CVE-2019-15657 CRITICAL Arbitrary Code Execution in eslint-utils

CVE-2019-15657 at a Glance

CVE Identifier CVE-2019-15657
GHSA Identifier GHSA-3gx7-xhv7-5mx3
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-20: Improper Input Validation
Affected Product Eslint utils
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-2019-15657

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

eslint-utils fixed: 1.4.1 
npm install eslint-utils@1.4.1
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 eslint-utils

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2019-15657, inspect your project dependencies using npm:

npm ls eslint-utils

Analyze the terminal output to locate any version of Eslint utils in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.4.1), your application is affected.

Note: The npm ls eslint-utils 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 Eslint utils, 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 `eslint-utils` >=1.2.0 or <1.4.1 are vulnerable to Arbitrary Code Execution. The `getStaticValue` does not properly sanitize user input allowing attackers to supply malicious input that executes arbitrary code during the linting process. The `getStringIfConstant` and `getPropertyName` functions are not affected. ## Recommendation Upgrade to version 1.4.1 or later.

CVE-2019-15657 Affected Eslint utils Versions

1 component(s)
Fixed Versions:
1.4.1
Product / Package Ecosystem Affected Versions Fixed Version
eslint-utils
npm/eslint-utils
npm
≥ 1.2.0
< 1.4.1
1.4.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/mysticatea/eslint-utils/security/advisories/GHSA-3gx7-xhv7-5mx3
NVD — CVE-2019-15657 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-15657
Security Fix Commit FIX COMMIT
https://github.com/mysticatea/eslint-utils/commit/08158db1c98fd71cf0f32ddefbc147e2620e724c
eslint.org/blog/2019/08/eslint... WEB
https://eslint.org/blog/2019/08/eslint-v6.2.1-released
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-3gx7-xhv7-5mx3
Eslint utils Source Repository REPOSITORY
https://github.com/mysticatea/eslint-utils
www.npmjs.com/advisories/1118 WEB
https://www.npmjs.com/advisories/1118

Frequently Asked Questions

What is CVE-2019-15657?
CVE-2019-15657 is a security vulnerability in Eslint utils involving Arbitrary Code Execution in eslint-utils under CWE-20: Improper Input Validation.
Which Eslint utils versions are affected?
Affected versions include releases prior to 1.4.1 across affected packages: eslint-utils.
What version fixes CVE-2019-15657?
Upgrading to 1.4.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is eslint-utils affected?
Yes, eslint-utils is affected in releases prior to 1.4.1. Upgrade your dependency to 1.4.1 or later.
What is the CVSS score of CVE-2019-15657?
CVE-2019-15657 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-2019-15657?
CVE-2019-15657 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-2019-15657?
Run the dependency tree command: 'npm ls eslint-utils'. 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-3gx7-xhv7-5mx3",
  "modified" : "2021-08-31T21:04:30Z",
  "published" : "2019-08-26T16:59:56Z",
  "aliases" : [ "CVE-2019-15657" ],
  "summary" : "Arbitrary Code Execution in eslint-utils",
  "details" : "Versions of `eslint-utils` >=1.2.0 or <1.4.1 are vulnerable to Arbitrary Code Execution. The `getStaticValue` does not properly sanitize user input allowing attackers to supply malicious input that executes arbitrary code during the linting process. The `getStringIfConstant` and `getPropertyName` functions are not affected.\n\n\n## Recommendation\n\nUpgrade to version 1.4.1 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" : "eslint-utils"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.2.0"
      }, {
        "fixed" : "1.4.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/mysticatea/eslint-utils/security/advisories/GHSA-3gx7-xhv7-5mx3"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-15657"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mysticatea/eslint-utils/commit/08158db1c98fd71cf0f32ddefbc147e2620e724c"
  }, {
    "type" : "WEB",
    "url" : "https://eslint.org/blog/2019/08/eslint-v6.2.1-released"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-3gx7-xhv7-5mx3"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mysticatea/eslint-utils"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1118"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T20:55:11Z",
    "nvd_published_at" : null
  }
}