Vulnerabilities in pkg:npm/f-serv

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Advisory Summary

GHSA-vx5w-cxch-wwc9 is a CRITICAL path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting F serv libraries in the npm ecosystem. The issue involves path traversal in f-serv. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/f-serv

1 Known Advisory Record(s)

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

Advisory ID CVE / NVD Severity Summary
GHSA-vx5w-cxch-wwc9 - CRITICAL Path Traversal in f-serv

GHSA-vx5w-cxch-wwc9 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-vx5w-cxch-wwc9
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product F serv
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-vx5w-cxch-wwc9

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

f-serv fixed: Latest secure release 
npm install f-serv@Latest secure release
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 f-serv

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-vx5w-cxch-wwc9, inspect your project dependencies using npm:

npm ls f-serv

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

Note: The npm ls f-serv 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 F serv, 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

All versions of `f-serv` are vulnerable to Path Traversal. Due to insufficient input sanitization in URLs, attackers can access server files by using relative paths when fetching files. ## Recommendation No fix is currently available. Consider using an alternative package until a fix is made available.

GHSA-vx5w-cxch-wwc9 Affected F serv Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
f-serv
npm/f-serv
npm
≥ 0.0.0

References

www.npmjs.com/advisories/1092 WEB
https://www.npmjs.com/advisories/1092

Frequently Asked Questions

What is GHSA-vx5w-cxch-wwc9?
GHSA-vx5w-cxch-wwc9 is a security vulnerability in F serv involving Path Traversal in f-serv under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which F serv versions are affected?
Affected versions include releases prior to current release patches across affected packages: f-serv.
What version fixes GHSA-vx5w-cxch-wwc9?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is f-serv affected?
Yes, f-serv is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with GHSA-vx5w-cxch-wwc9?
GHSA-vx5w-cxch-wwc9 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-vx5w-cxch-wwc9?
Run the dependency tree command: 'npm ls f-serv'. 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-vx5w-cxch-wwc9",
  "modified" : "2020-08-31T18:46:58Z",
  "published" : "2020-09-03T19:02:27Z",
  "aliases" : [ ],
  "summary" : "Path Traversal in f-serv",
  "details" : "All versions of `f-serv` are vulnerable to Path Traversal.  Due to insufficient input sanitization in URLs, attackers can access server files by using relative paths when fetching files. \n\n\n## Recommendation\n\nNo fix is currently available. Consider using an alternative package until a fix is made available.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "f-serv"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1092"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:46:58Z",
    "nvd_published_at" : null
  }
}