CVE-2022-27115: Studio 42/elfinder Remote Code Execution Vulnerability

CRITICAL
Advisory Identifier: GHSA-6p96-vfrc-fv32
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CVSS 9.8
CWE-434
Published
Advisory Summary

CVE-2022-27115 is a CRITICAL (CVSS 9.8) remote code execution vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting Studio 42/elfinder libraries in the Packagist ecosystem. The issue involves rce in studio-42 elfinder on windows before 2.1.61. Remediation is available by upgrading affected packages to version 2.1.61.

CVE-2022-27115 at a Glance

CVE Identifier CVE-2022-27115
GHSA Identifier GHSA-6p96-vfrc-fv32
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Product Studio 42/elfinder
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:H/A:H).

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 High (I:H)
Availability High (A:H)

How to Fix CVE-2022-27115

To remediate this vulnerability, upgrade all affected Studio 42/elfinder dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

studio-42/elfinder fixed: 2.1.61 
Upgrade studio-42/elfinder to 2.1.61
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 studio-42/elfinder

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-27115, inspect your project dependencies for Studio 42/elfinder:

inspect dependencies for studio-42/elfinder

Analyze the terminal output to locate any version of Studio 42/elfinder in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.1.61), 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-434: Unrestricted Upload of File with Dangerous Type, where the product allows the upload or transfer of dangerous file types that are automatically processed within its environment. In Studio 42/elfinder, 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

In Studio-42 elFinder 2.1.60, there is a vulnerability that causes remote code execution through file name bypass for file upload.

CVE-2022-27115 Affected Studio 42/elfinder Versions

1 component(s)
Fixed Versions:
2.1.61
Product / Package Ecosystem Affected Versions Fixed Version
studio-42/elfinder
 Packagist
< 2.1.61
2.1.61

References

NVD — CVE-2022-27115 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-27115
Studio 42/elfinder Source Repository REPOSITORY
https://github.com/Studio-42/elFinder/issues/3458
Security Fix Commit FIX COMMIT
https://github.com/Studio-42/elFinder/commit/69be51eea5b484822a29ddd40f1b72845954ba60

Frequently Asked Questions

What is CVE-2022-27115?
CVE-2022-27115 is a security vulnerability in Studio 42/elfinder involving RCE in Studio-42 elFinder on Windows before 2.1.61 under CWE-434: Unrestricted Upload of File with Dangerous Type.
Which Studio 42/elfinder versions are affected?
Affected versions include releases prior to 2.1.61 across affected packages: studio-42/elfinder.
What version fixes CVE-2022-27115?
Upgrading to 2.1.61 (or the latest patched release for your respective branch) resolves the vulnerability.
Is studio-42/elfinder affected?
Yes, studio-42/elfinder is affected in releases prior to 2.1.61. Upgrade your dependency to 2.1.61 or later.
What is the CVSS score of CVE-2022-27115?
CVE-2022-27115 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-27115?
CVE-2022-27115 is classified under CWE-434: Unrestricted Upload of File with Dangerous Type (The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.).
How can I check Packagist dependencies for CVE-2022-27115?
Run the dependency tree command: 'inspect dependencies for studio-42/elfinder'. 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-6p96-vfrc-fv32",
  "modified" : "2023-07-07T19:13:30Z",
  "published" : "2022-04-12T00:00:34Z",
  "aliases" : [ "CVE-2022-27115" ],
  "summary" : "RCE in Studio-42 elFinder on Windows before 2.1.61",
  "details" : "In Studio-42 elFinder 2.1.60, there is a vulnerability that causes remote code execution through file name bypass for file upload.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "studio-42/elfinder"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.1.61"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-27115"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Studio-42/elFinder/issues/3458"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Studio-42/elFinder/commit/69be51eea5b484822a29ddd40f1b72845954ba60"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-07T19:13:30Z",
    "nvd_published_at" : "2022-04-11T15:15:00Z"
  }
}