CVE-2018-3766: Buttle Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-m8cr-q935-8j67
Share
CVSS 7.5
CWE-22
Published
Advisory Summary

CVE-2018-3766 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Buttle libraries in the npm ecosystem. The issue involves path traversal in buttle. Remediation is available in the latest vendor maintenance releases.

CVE-2018-3766 at a Glance

CVE Identifier CVE-2018-3766
GHSA Identifier GHSA-m8cr-q935-8j67
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 Buttle
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-2018-3766

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

buttle fixed: Latest secure release 
npm install buttle@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 buttle

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2018-3766, inspect your project dependencies using npm:

npm ls buttle

Analyze the terminal output to locate any version of Buttle 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 buttle 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 Buttle, 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 `buttle` are vulnerable to Path Traversal. Due to insufficient input sanitization, attackers can access server files by using relative paths when fetching files. ## Recommendation No fix is currently available. Consider using an alternative module until a fix is made available.

CVE-2018-3766 Affected Buttle Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
buttle
npm/buttle
npm
≤ 0.2.0

References

NVD — CVE-2018-3766 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-3766
hackerone.com/reports/358112 WEB
https://hackerone.com/reports/358112
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-m8cr-q935-8j67
www.npmjs.com/advisories/990 WEB
https://www.npmjs.com/advisories/990

Frequently Asked Questions

What is CVE-2018-3766?
CVE-2018-3766 is a security vulnerability in Buttle involving Path Traversal in buttle under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Buttle versions are affected?
Affected versions include releases prior to current release patches across affected packages: buttle.
What version fixes CVE-2018-3766?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is buttle affected?
Yes, buttle 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-2018-3766?
CVE-2018-3766 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-2018-3766?
CVE-2018-3766 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-2018-3766?
Run the dependency tree command: 'npm ls buttle'. 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-m8cr-q935-8j67",
  "modified" : "2023-03-01T01:34:56Z",
  "published" : "2018-09-18T13:47:57Z",
  "aliases" : [ "CVE-2018-3766" ],
  "summary" : "Path Traversal in buttle",
  "details" : "All versions of `buttle` are vulnerable to Path Traversal.  Due to insufficient input sanitization, 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 module until a fix is made available.",
  "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" : "buttle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-3766"
  }, {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/358112"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-m8cr-q935-8j67"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/990"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:45:26Z",
    "nvd_published_at" : "2018-07-05T16:29:00Z"
  }
}