Vulnerabilities in pkg:npm/esm

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Advisory Summary

GHSA-qx4v-6gc5-f2vv is a MODERATE denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Esm libraries in the npm ecosystem. The issue involves regular expression denial of service. Remediation is available by upgrading affected packages to version 3.1.0.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/esm

1 Known Advisory Record(s)

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

Advisory ID CVE / NVD Severity Summary
GHSA-qx4v-6gc5-f2vv - MODERATE Regular Expression Denial of Service

GHSA-qx4v-6gc5-f2vv at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-qx4v-6gc5-f2vv
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Esm
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-qx4v-6gc5-f2vv

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

esm fixed: 3.1.0 
npm install esm@3.1.0
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 esm

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-qx4v-6gc5-f2vv, inspect your project dependencies using npm:

npm ls esm

Analyze the terminal output to locate any version of Esm in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.1.0), your application is affected.

Note: The npm ls esm 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Esm, 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

A Regular Expression Denial of Service vulnerability was discovered in esm before 3.1.0. The issue is that esm's find-indexes is using the unescaped identifiers in a regex, which, in this case, causes an infinite loop.

GHSA-qx4v-6gc5-f2vv Affected Esm Versions

1 component(s)
Fixed Versions:
3.1.0
Product / Package Ecosystem Affected Versions Fixed Version
esm
npm/esm
npm
< 3.1.0
3.1.0

References

Esm Source Repository REPOSITORY
https://github.com/standard-things/esm/issues/694
Security Fix Commit FIX COMMIT
https://github.com/standard-things/esm/commit/c41e001d81a5a52b0d2d1722b1c2af04d997c05b

Frequently Asked Questions

What is GHSA-qx4v-6gc5-f2vv?
GHSA-qx4v-6gc5-f2vv is a security vulnerability in Esm involving Regular Expression Denial of Service under CWE-400: Uncontrolled Resource Consumption.
Which Esm versions are affected?
Affected versions include releases prior to 3.1.0 across affected packages: esm.
What version fixes GHSA-qx4v-6gc5-f2vv?
Upgrading to 3.1.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is esm affected?
Yes, esm is affected in releases prior to 3.1.0. Upgrade your dependency to 3.1.0 or later.
What CWE is associated with GHSA-qx4v-6gc5-f2vv?
GHSA-qx4v-6gc5-f2vv is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check npm dependencies for GHSA-qx4v-6gc5-f2vv?
Run the dependency tree command: 'npm ls esm'. 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-qx4v-6gc5-f2vv",
  "modified" : "2021-02-25T17:20:28Z",
  "published" : "2019-06-20T14:32:56Z",
  "aliases" : [ ],
  "summary" : "Regular Expression Denial of Service",
  "details" : "A Regular Expression Denial of Service vulnerability was discovered in esm before 3.1.0. The issue is that esm's find-indexes is using the unescaped identifiers in a regex, which, in this case, causes an infinite loop.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "esm"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.1.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/standard-things/esm/issues/694"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/standard-things/esm/commit/c41e001d81a5a52b0d2d1722b1c2af04d997c05b"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-06-20T14:17:20Z",
    "nvd_published_at" : null
  }
}