GHSA-48gc-5j93-5cfq: Serve Path Traversal Vulnerability

HIGH
Share
CWE-22
Published
Advisory Summary

GHSA-48gc-5j93-5cfq is a HIGH path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Serve libraries in the npm ecosystem. The issue involves path traversal in serve. Remediation is available by upgrading affected packages to version 10.1.2.

GHSA-48gc-5j93-5cfq at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-48gc-5j93-5cfq
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Serve
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-48gc-5j93-5cfq

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

serve fixed: 10.1.2 
npm install serve@10.1.2
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 serve

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-48gc-5j93-5cfq, inspect your project dependencies using npm:

npm ls serve

Analyze the terminal output to locate any version of Serve in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.1.2), your application is affected.

Note: The npm ls serve 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 Serve, 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 `serve` prior to 10.1.2 are vulnerable to Path Traversal. Explicitly ignored folders can be accessed through relative paths, which allows attackers to access hidden folders and files. ## Recommendation Upgrade to version 10.1.2 or later.

GHSA-48gc-5j93-5cfq Affected Serve Versions

1 component(s)
Fixed Versions:
10.1.2
Product / Package Ecosystem Affected Versions Fixed Version
serve
npm/serve
npm
< 10.1.2
10.1.2

References

hackerone.com/reports/486933 WEB
https://hackerone.com/reports/486933
www.npmjs.com/advisories/965 WEB
https://www.npmjs.com/advisories/965

Frequently Asked Questions

What is GHSA-48gc-5j93-5cfq?
GHSA-48gc-5j93-5cfq is a security vulnerability in Serve involving Path Traversal in serve under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Serve versions are affected?
Affected versions include releases prior to 10.1.2 across affected packages: serve.
What version fixes GHSA-48gc-5j93-5cfq?
Upgrading to 10.1.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is serve affected?
Yes, serve is affected in releases prior to 10.1.2. Upgrade your dependency to 10.1.2 or later.
What CWE is associated with GHSA-48gc-5j93-5cfq?
GHSA-48gc-5j93-5cfq 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 GHSA-48gc-5j93-5cfq?
Run the dependency tree command: 'npm ls serve'. 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-48gc-5j93-5cfq",
  "modified" : "2020-08-31T18:42:15Z",
  "published" : "2020-09-11T21:15:54Z",
  "aliases" : [ ],
  "summary" : "Path Traversal in serve",
  "details" : "Versions of `serve` prior to 10.1.2 are vulnerable to Path Traversal. Explicitly ignored folders can be accessed through relative paths, which allows attackers to access hidden folders and files.\n\n\n## Recommendation\n\nUpgrade to version 10.1.2 or later.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "serve"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "10.1.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/486933"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/965"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:42:15Z",
    "nvd_published_at" : null
  }
}