CVE-2023-35840 elFinder vulnerable to path traversal in LocalVolumeDriver connector

Medium 6.5 Published 19 Jun 2023 Updated 11 Dec 2024

Attackers can exploit path traversal in elFinder's local file system driver to read or modify files outside the intended directory.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2023-35840?

CVE-2023-35840 is a medium-severity path traversal vulnerability in n/a, published on 19 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

_joinPath in elFinderVolumeLocalFileSystem.class.php in elFinder before 2.1.62 allows path traversal in the PHP LocalVolumeDriver connector.

Weakness: CWE-22

Which versions are affected by CVE-2023-35840?

2 open source packages ship an affected version, including studio-42/elfinder. It affects 1 product.

Package	Affected	Fixed in
`studio-42/elfinder` Packagist	All versions	`2.1.62`
`studio-42/elfinder` Packagist	All versions	`2.1.62`

Products include Std42 Elfinder.

How do I fix CVE-2023-35840?

Upgrade studio-42/elfinder to 2.1.62 or later.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2023-35840 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-35840 exists.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-wm5g-p99q-66g4.