Vulnerabilities in pkg:npm/browserless-chrome

PACKAGE
Advisory Identifier: GHSA-8p9r-f949-699g
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Advisory Summary

CVE-2020-7758 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Browserless chrome libraries in the npm ecosystem. The issue involves path traversal in browserless-chrome. Remediation is available by upgrading affected packages to version 1.43.0.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/browserless-chrome

1 Known Advisory Record(s)

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

Advisory ID CVE / NVD Severity Summary
GHSA-8p9r-f949-699g CVE-2020-7758 HIGH Path Traversal in browserless-chrome

CVE-2020-7758 at a Glance

CVE Identifier CVE-2020-7758
GHSA Identifier GHSA-8p9r-f949-699g
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Browserless chrome
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

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 None (I:N)
Availability None (A:N)

How to Fix CVE-2020-7758

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

browserless-chrome fixed: 1.43.0 
npm install browserless-chrome@1.43.0
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 browserless-chrome

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-7758, inspect your project dependencies using npm:

npm ls browserless-chrome

Analyze the terminal output to locate any version of Browserless chrome in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.43.0), your application is affected.

Note: The npm ls browserless-chrome 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Browserless chrome, 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

This affects all versions of browserless-chrome before 1.43.0. User input flowing from the workspace endpoint gets used to create a file path filePath and this is fetched and then sent back to a user. This can be escaped to fetch arbitrary files from a server.

CVE-2020-7758 Affected Browserless chrome Versions

1 component(s)
Fixed Versions:
1.43.0
Product / Package Ecosystem Affected Versions Fixed Version
browserless-chrome
npm/browserless-chrome
npm
< 1.43.0
1.43.0

References

NVD — CVE-2020-7758 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7758
Security Fix Commit FIX COMMIT
https://github.com/browserless/chrome/commit/848b87e5bea4f8473eea85261a5ff922d6ebd2b6
Browserless chrome Source Repository REPOSITORY
https://github.com/browserless/chrome
Browserless chrome Source Repository REPOSITORY
https://github.com/browserless/chrome/blob/master/src/routes.ts%23L175
Browserless chrome Release RELEASE
https://github.com/browserless/chrome/releases/tag/1.40.2-chrome-stable
snyk.io/vuln/snyk-js-browse... WEB
https://snyk.io/vuln/SNYK-JS-BROWSERLESSCHROME-1023657
www.npmjs.com/package/browserless... WEB
https://www.npmjs.com/package/browserless-chrome

Frequently Asked Questions

What is CVE-2020-7758?
CVE-2020-7758 is a security vulnerability in Browserless chrome involving Path Traversal in browserless-chrome under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Browserless chrome versions are affected?
Affected versions include releases prior to 1.43.0 across affected packages: browserless-chrome.
What version fixes CVE-2020-7758?
Upgrading to 1.43.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is browserless-chrome affected?
Yes, browserless-chrome is affected in releases prior to 1.43.0. Upgrade your dependency to 1.43.0 or later.
What is the CVSS score of CVE-2020-7758?
CVE-2020-7758 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2020-7758?
CVE-2020-7758 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check npm dependencies for CVE-2020-7758?
Run the dependency tree command: 'npm ls browserless-chrome'. 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-8p9r-f949-699g",
  "modified" : "2022-10-20T13:54:04Z",
  "published" : "2021-05-10T18:46:48Z",
  "aliases" : [ "CVE-2020-7758" ],
  "summary" : "Path Traversal in browserless-chrome",
  "details" : "This affects all versions of browserless-chrome before 1.43.0. User input flowing from the workspace endpoint gets used to create a file path filePath and this is fetched and then sent back to a user. This can be escaped to fetch arbitrary files from a server.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "browserless-chrome"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.43.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7758"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/browserless/chrome/commit/848b87e5bea4f8473eea85261a5ff922d6ebd2b6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/browserless/chrome"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/browserless/chrome/blob/master/src/routes.ts%23L175"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/browserless/chrome/releases/tag/1.40.2-chrome-stable"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-BROWSERLESSCHROME-1023657"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/package/browserless-chrome"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-20T22:41:52Z",
    "nvd_published_at" : "2020-11-02T22:15:00Z"
  }
}