Vulnerabilities in pkg:npm/webtorrent

PACKAGE
Advisory Identifier: GHSA-gjh4-fcv3-whpq
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Advisory Summary

CVE-2019-15782 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Webtorrent libraries in the npm ecosystem. The issue involves cross-site scripting in webtorrent. Remediation is available by upgrading affected packages to version 0.107.6.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/webtorrent

1 Known Advisory Record(s)

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

Advisory ID CVE / NVD Severity Summary
GHSA-gjh4-fcv3-whpq CVE-2019-15782 MODERATE Cross-Site Scripting in webtorrent

CVE-2019-15782 at a Glance

CVE Identifier CVE-2019-15782
GHSA Identifier GHSA-gjh4-fcv3-whpq
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Webtorrent
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.1

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:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2019-15782

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

webtorrent fixed: 0.107.6 
npm install webtorrent@0.107.6
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 webtorrent

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2019-15782, inspect your project dependencies using npm:

npm ls webtorrent

Analyze the terminal output to locate any version of Webtorrent in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.107.6), your application is affected.

Note: The npm ls webtorrent 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 Webtorrent, 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 `webtorrent` prior to 0.107.6 are vulnerable to Cross-Site Scripting. `webtorrent` servers started with `torrent.createServer()` lists a torrent's title and files in the index page without sanitization. This allows attackers to execute arbitrary JavaScript in the victim's browser through files with names containing the malicious payload. The issue is mitigated due to the fact that the server only allows fetching data pieces from the torrent. ## Recommendation Upgrade to version 0.107.6 or later.

CVE-2019-15782 Affected Webtorrent Versions

1 component(s)
Fixed Versions:
0.107.6
Product / Package Ecosystem Affected Versions Fixed Version
webtorrent
npm/webtorrent
npm
< 0.107.6
0.107.6

References

NVD — CVE-2019-15782 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-15782
Webtorrent Source Repository REPOSITORY
https://github.com/webtorrent/webtorrent/pull/1714
Security Fix Commit FIX COMMIT
https://github.com/webtorrent/webtorrent/commit/7e829b5d52c32d2e6d8f5fbcf0f8f418fffde083
hackerone.com/reports/681617 WEB
https://hackerone.com/reports/681617
Webtorrent Source Repository REPOSITORY
https://github.com/webtorrent/webtorrent/compare/v0.107.5...v0.107.6
snyk.io/vuln/snyk-js-webtor... WEB
https://snyk.io/vuln/SNYK-JS-WEBTORRENT-460351
www.npmjs.com/advisories/1158 WEB
https://www.npmjs.com/advisories/1158

Frequently Asked Questions

What is CVE-2019-15782?
CVE-2019-15782 is a security vulnerability in Webtorrent involving Cross-Site Scripting in webtorrent under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Webtorrent versions are affected?
Affected versions include releases prior to 0.107.6 across affected packages: webtorrent.
What version fixes CVE-2019-15782?
Upgrading to 0.107.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is webtorrent affected?
Yes, webtorrent is affected in releases prior to 0.107.6. Upgrade your dependency to 0.107.6 or later.
What is the CVSS score of CVE-2019-15782?
CVE-2019-15782 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2019-15782?
CVE-2019-15782 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 CVE-2019-15782?
Run the dependency tree command: 'npm ls webtorrent'. 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-gjh4-fcv3-whpq",
  "modified" : "2021-08-17T22:20:20Z",
  "published" : "2019-09-04T10:02:50Z",
  "aliases" : [ "CVE-2019-15782" ],
  "summary" : "Cross-Site Scripting in webtorrent",
  "details" : "Versions of `webtorrent` prior to 0.107.6 are vulnerable to Cross-Site Scripting. `webtorrent` servers started with `torrent.createServer()` lists a torrent's title and files in the index page without sanitization. This allows attackers to execute arbitrary JavaScript in the victim's browser through files with names containing the malicious payload. The issue is mitigated due to the fact that the server only allows fetching data pieces from the torrent.\n\n\n## Recommendation\n\nUpgrade to version 0.107.6 or later.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "webtorrent"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.107.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-15782"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/webtorrent/webtorrent/pull/1714"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/webtorrent/webtorrent/commit/7e829b5d52c32d2e6d8f5fbcf0f8f418fffde083"
  }, {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/681617"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/webtorrent/webtorrent/compare/v0.107.5...v0.107.6"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-WEBTORRENT-460351"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1158"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-09-03T09:58:03Z",
    "nvd_published_at" : null
  }
}