Vulnerabilities in pkg:nuget/elFinder.Net.Core

PACKAGE
Advisory Identifier: GHSA-mvvp-gwgc-5hrp
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Advisory Summary

CVE-2021-23407 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting ElFinder.Net.Core libraries in the NuGet ecosystem. The issue involves path traversal in elfinder.net.core. Remediation is available by upgrading affected packages to version 1.2.4.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:nuget/elFinder.Net.Core

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:nuget/elFinder.Net.Core. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-mvvp-gwgc-5hrp CVE-2021-23407 HIGH Path Traversal in elFinder.Net.Core

CVE-2021-23407 at a Glance

CVE Identifier CVE-2021-23407
GHSA Identifier GHSA-mvvp-gwgc-5hrp
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 ElFinder.Net.Core
Package Ecosystem NuGet
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-2021-23407

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

elFinder.Net.Core fixed: 1.2.4 
Upgrade elFinder.Net.Core to 1.2.4
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for elFinder.Net.Core

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-23407, inspect your project dependencies for ElFinder.Net.Core:

inspect dependencies for elFinder.Net.Core

Analyze the terminal output to locate any version of ElFinder.Net.Core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.2.4), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

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 ElFinder.Net.Core, 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 the package elFinder.Net.Core from 0 and before 1.2.4. The user-controlled file name is not properly sanitized before it is used to create a file system path.

CVE-2021-23407 Affected ElFinder.Net.Core Versions

1 component(s)
Fixed Versions:
1.2.4
Product / Package Ecosystem Affected Versions Fixed Version
elFinder.Net.Core
nuget/elFinder.Net.Core
NuGet
< 1.2.4
1.2.4

References

NVD — CVE-2021-23407 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-23407
Security Fix Commit FIX COMMIT
https://github.com/trannamtrung1st/elFinder.Net.Core/commit/5498c8a86b76ef089cfbd7ef8be014b61fa11c73
ElFinder.Net.Core Source Repository REPOSITORY
https://github.com/trannamtrung1st/elFinder.Net.Core
ElFinder.Net.Core Release RELEASE
https://github.com/trannamtrung1st/elFinder.Net.Core/releases/tag/all-1.2.4
snyk.io/vuln/snyk-dotnet-el... WEB
https://snyk.io/vuln/SNYK-DOTNET-ELFINDERNETCORE-1315152

Frequently Asked Questions

What is CVE-2021-23407?
CVE-2021-23407 is a security vulnerability in ElFinder.Net.Core involving Path Traversal in elFinder.Net.Core under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which ElFinder.Net.Core versions are affected?
Affected versions include releases prior to 1.2.4 across affected packages: elFinder.Net.Core.
What version fixes CVE-2021-23407?
Upgrading to 1.2.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is elFinder.Net.Core affected?
Yes, elFinder.Net.Core is affected in releases prior to 1.2.4. Upgrade your dependency to 1.2.4 or later.
What is the CVSS score of CVE-2021-23407?
CVE-2021-23407 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-2021-23407?
CVE-2021-23407 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 NuGet dependencies for CVE-2021-23407?
Run the dependency tree command: 'inspect dependencies for elFinder.Net.Core'. 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-mvvp-gwgc-5hrp",
  "modified" : "2021-08-31T21:21:23Z",
  "published" : "2021-08-02T17:30:27Z",
  "aliases" : [ "CVE-2021-23407" ],
  "summary" : "Path Traversal in elFinder.Net.Core",
  "details" : "This affects the package elFinder.Net.Core from 0 and before 1.2.4. The user-controlled file name is not properly sanitized before it is used to create a file system 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" : "NuGet",
      "name" : "elFinder.Net.Core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.2.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-23407"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/trannamtrung1st/elFinder.Net.Core/commit/5498c8a86b76ef089cfbd7ef8be014b61fa11c73"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/trannamtrung1st/elFinder.Net.Core"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/trannamtrung1st/elFinder.Net.Core/releases/tag/all-1.2.4"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-DOTNET-ELFINDERNETCORE-1315152"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-07-15T18:45:24Z",
    "nvd_published_at" : "2021-07-14T17:15:00Z"
  }
}