CVE-2020-8298: Fs path Command Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-8mrf-64fw-2x75
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CVSS 9.8
CWE-77
Published
Advisory Summary

CVE-2020-8298 is a CRITICAL (CVSS 9.8) command injection vulnerability (CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')) affecting Fs path libraries in the npm ecosystem. The issue involves command injection in fs-path. Remediation is available by upgrading affected packages to version 0.0.25.

CVE-2020-8298 at a Glance

CVE Identifier CVE-2020-8298
GHSA Identifier GHSA-8mrf-64fw-2x75
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
Affected Product Fs path
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:H/A:H).

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 High (I:H)
Availability High (A:H)

How to Fix CVE-2020-8298

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

fs-path fixed: 0.0.25 
npm install fs-path@0.0.25
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 fs-path

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-8298, inspect your project dependencies using npm:

npm ls fs-path

Analyze the terminal output to locate any version of Fs path in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.25), your application is affected.

Note: The npm ls fs-path 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-77: Improper Neutralization of Special Elements used in a Command ('Command Injection'), where the product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. In Fs path, 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

fs-path node module before 0.0.25 is vulnerable to command injection by way of user-supplied inputs via the `copy`, `copySync`, `remove`, and `removeSync` methods.

CVE-2020-8298 Affected Fs path Versions

1 component(s)
Fixed Versions:
0.0.25
Product / Package Ecosystem Affected Versions Fixed Version
fs-path
npm/fs-path
npm
< 0.0.25
0.0.25

References

NVD — CVE-2020-8298 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8298
Fs path Source Repository REPOSITORY
https://github.com/pillys/fs-path/pull/6
Security Fix Commit FIX COMMIT
https://github.com/pillys/fs-path/commit/88ff5ee51046bb2c5d5e9c5afe6819b032092ce7
hackerone.com/reports/324491 WEB
https://hackerone.com/reports/324491

Frequently Asked Questions

What is CVE-2020-8298?
CVE-2020-8298 is a security vulnerability in Fs path involving Command injection in fs-path under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection').
Which Fs path versions are affected?
Affected versions include releases prior to 0.0.25 across affected packages: fs-path.
What version fixes CVE-2020-8298?
Upgrading to 0.0.25 (or the latest patched release for your respective branch) resolves the vulnerability.
Is fs-path affected?
Yes, fs-path is affected in releases prior to 0.0.25. Upgrade your dependency to 0.0.25 or later.
What is the CVSS score of CVE-2020-8298?
CVE-2020-8298 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-8298?
CVE-2020-8298 is classified under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') (The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.).
How can I check npm dependencies for CVE-2020-8298?
Run the dependency tree command: 'npm ls fs-path'. 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-8mrf-64fw-2x75",
  "modified" : "2021-03-25T21:05:18Z",
  "published" : "2021-03-25T21:06:41Z",
  "aliases" : [ "CVE-2020-8298" ],
  "summary" : "Command injection in fs-path",
  "details" : "fs-path node module before 0.0.25 is vulnerable to command injection by way of user-supplied inputs via the `copy`, `copySync`, `remove`, and `removeSync` methods.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "fs-path"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.0.25"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-8298"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pillys/fs-path/pull/6"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pillys/fs-path/commit/88ff5ee51046bb2c5d5e9c5afe6819b032092ce7"
  }, {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/324491"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-77" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-03-25T21:05:18Z",
    "nvd_published_at" : "2021-03-04T20:15:00Z"
  }
}