Remote Code Execution (RCE) Affecting studio-42/elfinder package, versions <2.1.63
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PHP-STUDIO42ELFINDER-8320938
- published1 Nov 2024
- disclosed31 Oct 2024
- creditMetin Yunus Kandemir
Introduced: 31 Oct 2024
CVE-2023-52044 (opens in a new tab)How to fix?
Upgrade studio-42/elfinder to version 2.1.63 or higher.
Overview
studio-42/elfinder is an open-source file manager for web, written in JavaScript using jQuery UI.
Affected versions of this package are vulnerable to Remote Code Execution (RCE) due to the lack of restrictions on file types that can be uploaded, specifically the .php8 extension. An attacker can execute arbitrary code on the server by uploading a malicious .php8 file.
Workaround
This issue can be mitigated by using additionalMimeMap in the roots configuration.
PoC
Select arbitrary png file to upload
Capture request with Burp and set content as
test<?php phpinfo();?>Set filename like
test.php8After forwarding the request, the file is successfully uploaded under the files directory