GHSA-6394-6h9h-cfjg: Nwmatcher Denial of Service Vulnerability

MODERATE
Share
CWE-400
Published
Advisory Summary

GHSA-6394-6h9h-cfjg is a MODERATE denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Nwmatcher libraries in the npm ecosystem. The issue involves regular expression denial of service. Remediation is available by upgrading affected packages to version 1.4.4.

GHSA-6394-6h9h-cfjg at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-6394-6h9h-cfjg
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Nwmatcher
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-6394-6h9h-cfjg

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

nwmatcher fixed: 1.4.4 
npm install nwmatcher@1.4.4
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 nwmatcher

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-6394-6h9h-cfjg, inspect your project dependencies using npm:

npm ls nwmatcher

Analyze the terminal output to locate any version of Nwmatcher in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.4.4), your application is affected.

Note: The npm ls nwmatcher 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 Nwmatcher, 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 vulnerability was found in nwmatcher before 1.4.4. The fix replacing multiple repeated instances of the "\s*" pattern.

GHSA-6394-6h9h-cfjg Affected Nwmatcher Versions

1 component(s)
Fixed Versions:
1.4.4
Product / Package Ecosystem Affected Versions Fixed Version
nwmatcher
npm/nwmatcher
npm
< 1.4.4
1.4.4

References

Security Fix Commit FIX COMMIT
https://github.com/dperini/nwmatcher/commit/9dcc2b039beeabd18327a5ebaa537625872e16f0

Frequently Asked Questions

What is GHSA-6394-6h9h-cfjg?
GHSA-6394-6h9h-cfjg is a security vulnerability in Nwmatcher involving Regular Expression Denial of Service under CWE-400: Uncontrolled Resource Consumption.
Which Nwmatcher versions are affected?
Affected versions include releases prior to 1.4.4 across affected packages: nwmatcher.
What version fixes GHSA-6394-6h9h-cfjg?
Upgrading to 1.4.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is nwmatcher affected?
Yes, nwmatcher is affected in releases prior to 1.4.4. Upgrade your dependency to 1.4.4 or later.
What CWE is associated with GHSA-6394-6h9h-cfjg?
GHSA-6394-6h9h-cfjg 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-6394-6h9h-cfjg?
Run the dependency tree command: 'npm ls nwmatcher'. 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-6394-6h9h-cfjg",
  "modified" : "2021-02-25T17:23:12Z",
  "published" : "2019-06-07T21:12:35Z",
  "aliases" : [ ],
  "summary" : "Regular Expression Denial of Service",
  "details" : "A Regular Expression vulnerability was found in nwmatcher before 1.4.4. The fix replacing multiple repeated instances of the \"\\s*\" pattern.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "nwmatcher"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.4.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/dperini/nwmatcher/commit/9dcc2b039beeabd18327a5ebaa537625872e16f0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-06-07T21:11:09Z",
    "nvd_published_at" : null
  }
}