GHSA-r9q4-w3fm-wrm2: Google closure library Cross-Site Scripting Vulnerability

MODERATE
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CWE-79
Published
Advisory Summary

GHSA-r9q4-w3fm-wrm2 is a MODERATE cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Google closure library libraries in the npm ecosystem. The issue involves cross-site scripting in google-closure-library. Remediation is available by upgrading affected packages to version 20190301.0.0.

GHSA-r9q4-w3fm-wrm2 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-r9q4-w3fm-wrm2
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Google closure library
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-r9q4-w3fm-wrm2

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

google-closure-library fixed: 20190301.0.0 
npm install google-closure-library@20190301.0.0
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 google-closure-library

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-r9q4-w3fm-wrm2, inspect your project dependencies using npm:

npm ls google-closure-library

Analyze the terminal output to locate any version of Google closure library in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 20190301.0.0), your application is affected.

Note: The npm ls google-closure-library 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Google closure library, 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 `google-closure-library` prior to 20190301.0.0 are vulnerable to Cross-Site Scripting. The `safedomtreeprocessor.processToString()` function improperly processed empty elements, which could allow attackers to execute arbitrary JavaScript through Mutation Cross-Site Scripting. ## Recommendation Upgrade to version 20190301.0.0 or later.

GHSA-r9q4-w3fm-wrm2 Affected Google closure library Versions

1 component(s)
Fixed Versions:
20190301.0.0
Product / Package Ecosystem Affected Versions Fixed Version
google-closure-library
npm/google-closure-library
npm
< 20190301.0.0
20190301.0.0

References

Security Fix Commit FIX COMMIT
https://github.com/google/closure-library/commit/c79ab48e8e962fee57e68739c00e16b9934c0ffa#commitcomment-33294853
Google closure library Source Repository REPOSITORY
https://github.com/google/closure-library
snyk.io/vuln/snyk-js-google... WEB
https://snyk.io/vuln/SNYK-JS-GOOGLECLOSURELIBRARY-174519
www.npmjs.com/advisories/878 WEB
https://www.npmjs.com/advisories/878

Frequently Asked Questions

What is GHSA-r9q4-w3fm-wrm2?
GHSA-r9q4-w3fm-wrm2 is a security vulnerability in Google closure library involving Cross-Site Scripting in google-closure-library under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Google closure library versions are affected?
Affected versions include releases prior to 20190301.0.0 across affected packages: google-closure-library.
What version fixes GHSA-r9q4-w3fm-wrm2?
Upgrading to 20190301.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is google-closure-library affected?
Yes, google-closure-library is affected in releases prior to 20190301.0.0. Upgrade your dependency to 20190301.0.0 or later.
What CWE is associated with GHSA-r9q4-w3fm-wrm2?
GHSA-r9q4-w3fm-wrm2 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check npm dependencies for GHSA-r9q4-w3fm-wrm2?
Run the dependency tree command: 'npm ls google-closure-library'. 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-r9q4-w3fm-wrm2",
  "modified" : "2021-09-27T21:01:47Z",
  "published" : "2020-09-02T21:21:43Z",
  "aliases" : [ ],
  "summary" : "Cross-Site Scripting in google-closure-library",
  "details" : "Versions of `google-closure-library` prior to 20190301.0.0 are vulnerable to Cross-Site Scripting. The `safedomtreeprocessor.processToString()` function improperly processed empty elements, which could allow attackers to execute arbitrary JavaScript through Mutation Cross-Site Scripting.\n\n\n## Recommendation\n\nUpgrade to version 20190301.0.0 or later.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "google-closure-library"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "20190301.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/google/closure-library/commit/c79ab48e8e962fee57e68739c00e16b9934c0ffa#commitcomment-33294853"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/google/closure-library"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-GOOGLECLOSURELIBRARY-174519"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/878"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:39:08Z",
    "nvd_published_at" : null
  }
}