CVE-2018-16482: Mcstatic Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-cxmj-qjv6-vx9p
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CVSS 7.5
CWE-22
Published
Advisory Summary

CVE-2018-16482 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Mcstatic libraries in the npm ecosystem. The issue involves mcstatic directory traversal vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2018-16482 at a Glance

CVE Identifier CVE-2018-16482
GHSA Identifier GHSA-cxmj-qjv6-vx9p
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 Mcstatic
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-2018-16482

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

mcstatic fixed: Latest secure release 
npm install mcstatic@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 mcstatic

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2018-16482, inspect your project dependencies using npm:

npm ls mcstatic

Analyze the terminal output to locate any version of Mcstatic 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 mcstatic 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 Mcstatic, 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

A server directory traversal vulnerability was found on node module mcstatic <=0.0.20 that would allow an attack to access sensitive information in the file system by appending slashes in the URL path.

CVE-2018-16482 Affected Mcstatic Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
mcstatic
npm/mcstatic
npm
≤ 0.0.20

References

NVD — CVE-2018-16482 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-16482
hackerone.com/reports/330285 WEB
https://hackerone.com/reports/330285
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-cxmj-qjv6-vx9p

Frequently Asked Questions

What is CVE-2018-16482?
CVE-2018-16482 is a security vulnerability in Mcstatic involving mcstatic directory traversal vulnerability under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Mcstatic versions are affected?
Affected versions include releases prior to current release patches across affected packages: mcstatic.
What version fixes CVE-2018-16482?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is mcstatic affected?
Yes, mcstatic is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2018-16482?
CVE-2018-16482 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-2018-16482?
CVE-2018-16482 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-2018-16482?
Run the dependency tree command: 'npm ls mcstatic'. 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-cxmj-qjv6-vx9p",
  "modified" : "2023-09-12T20:46:15Z",
  "published" : "2019-02-07T18:15:44Z",
  "aliases" : [ "CVE-2018-16482" ],
  "summary" : "mcstatic directory traversal vulnerability",
  "details" : "A server directory traversal vulnerability was found on node module mcstatic <=0.0.20 that would allow an attack to access sensitive information in the file system by appending slashes in the URL path.",
  "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" : "mcstatic"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.0.20"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-16482"
  }, {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/330285"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-cxmj-qjv6-vx9p"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:33:14Z",
    "nvd_published_at" : null
  }
}