GHSA-vc6r-4x6g-mmqc: M server Path Traversal Vulnerability

MODERATE
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CWE-22
Published
Advisory Summary

GHSA-vc6r-4x6g-mmqc is a MODERATE path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting M server libraries in the npm ecosystem. The issue involves path traversal in m-server. Remediation is available by upgrading affected packages to version 1.4.2.

GHSA-vc6r-4x6g-mmqc at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-vc6r-4x6g-mmqc
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product M server
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-vc6r-4x6g-mmqc

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

m-server fixed: 1.4.2 
npm install m-server@1.4.2
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 m-server

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-vc6r-4x6g-mmqc, inspect your project dependencies using npm:

npm ls m-server

Analyze the terminal output to locate any version of M server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.4.2), your application is affected.

Note: The npm ls m-server 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 M server, 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 `m-server` before 1.4.2 are vulnerable to path traversal allowing a remote attacker to display content of arbitrary files from the server. ## Recommendation Update to version 1.4.2 or later.

GHSA-vc6r-4x6g-mmqc Affected M server Versions

1 component(s)
Fixed Versions:
1.4.2
Product / Package Ecosystem Affected Versions Fixed Version
m-server
npm/m-server
npm
< 1.4.2
1.4.2

References

Security Fix Commit FIX COMMIT
https://github.com/nunnly/m-server/commit/01f13f040d1961ca3146dce7e2db990156e65e9a
hackerone.com/reports/319795 WEB
https://hackerone.com/reports/319795
M server Source Repository REPOSITORY
https://github.com/nodejs/security-wg/blob/master/vuln/npm/468.json
www.npmjs.com/advisories/731 WEB
https://www.npmjs.com/advisories/731

Frequently Asked Questions

What is GHSA-vc6r-4x6g-mmqc?
GHSA-vc6r-4x6g-mmqc is a security vulnerability in M server involving Path Traversal in m-server under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which M server versions are affected?
Affected versions include releases prior to 1.4.2 across affected packages: m-server.
What version fixes GHSA-vc6r-4x6g-mmqc?
Upgrading to 1.4.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is m-server affected?
Yes, m-server is affected in releases prior to 1.4.2. Upgrade your dependency to 1.4.2 or later.
What CWE is associated with GHSA-vc6r-4x6g-mmqc?
GHSA-vc6r-4x6g-mmqc 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-vc6r-4x6g-mmqc?
Run the dependency tree command: 'npm ls m-server'. 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-vc6r-4x6g-mmqc",
  "modified" : "2020-08-31T18:33:45Z",
  "published" : "2019-06-11T16:16:23Z",
  "aliases" : [ ],
  "summary" : "Path Traversal in m-server",
  "details" : "Versions of `m-server` before 1.4.2 are vulnerable to path traversal allowing a remote attacker to display content of arbitrary files from the server.\n\n\n## Recommendation\n\nUpdate to version 1.4.2 or later.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "m-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.4.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/nunnly/m-server/commit/01f13f040d1961ca3146dce7e2db990156e65e9a"
  }, {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/319795"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nodejs/security-wg/blob/master/vuln/npm/468.json"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/731"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-06-11T16:09:28Z",
    "nvd_published_at" : null
  }
}