Vulnerabilities in pkg:npm/droppy

PACKAGE
Advisory Identifier: GHSA-grv5-w5vr-8h98
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Advisory Summary

CVE-2020-7757 is a MODERATE (CVSS 6.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Droppy libraries in the npm ecosystem. The issue involves path traversal in droppy. Remediation is available in the latest vendor maintenance releases.

2 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/droppy

2 Known Advisory Record(s)

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

Advisory ID CVE / NVD Severity Summary
GHSA-grv5-w5vr-8h98 CVE-2020-7757 MODERATE Path Traversal in droppy
GHSA-rhvc-x32h-5526 CVE-2016-10529 HIGH No CSRF Validation in droppy

CVE-2020-7757 at a Glance

CVE Identifier CVE-2020-7757
GHSA Identifier GHSA-grv5-w5vr-8h98
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Droppy
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2020-7757

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

droppy fixed: Latest secure release 
npm install droppy@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 droppy

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-7757, inspect your project dependencies using npm:

npm ls droppy

Analyze the terminal output to locate any version of Droppy 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 droppy 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 Droppy, 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

This affects all versions of package droppy. It is possible to traverse directories to fetch configuration files from a droopy server.

CVE-2020-7757 Affected Droppy Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
droppy
npm/droppy
npm
≤ 12.2.0

References

NVD — CVE-2020-7757 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7757
Droppy Source Repository REPOSITORY
https://github.com/silverwind/droppy/blob/master/server/server.js%23L845
snyk.io/vuln/snyk-js-droppy... WEB
https://snyk.io/vuln/SNYK-JS-DROPPY-1023656

Frequently Asked Questions

What is CVE-2020-7757?
CVE-2020-7757 is a security vulnerability in Droppy involving Path Traversal in droppy under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Droppy versions are affected?
Affected versions include releases prior to current release patches across affected packages: droppy.
What version fixes CVE-2020-7757?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is droppy affected?
Yes, droppy 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-2020-7757?
CVE-2020-7757 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2020-7757?
CVE-2020-7757 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-2020-7757?
Run the dependency tree command: 'npm ls droppy'. 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-grv5-w5vr-8h98",
  "modified" : "2021-04-20T19:42:45Z",
  "published" : "2021-05-10T18:47:29Z",
  "aliases" : [ "CVE-2020-7757" ],
  "summary" : "Path Traversal in droppy",
  "details" : "This affects all versions of package droppy. It is possible to traverse directories to fetch configuration files from a droopy server.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "droppy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "12.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7757"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/silverwind/droppy/blob/master/server/server.js%23L845"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-DROPPY-1023656"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-20T19:42:45Z",
    "nvd_published_at" : "2020-11-02T22:15:00Z"
  }
}