Path traversal in elFinder.AspNet

1) Path traversal

EUVDB-ID: #VU55453

Risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-23415

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

elFinder.AspNet: 1.0.0 - 1.1.0

External links

http://github.com/mguinness/elFinder.AspNet/commit/675049b39284a9e84f0915c71d688da8ebc7d720
http://snyk.io/vuln/SNYK-DOTNET-ELFINDERASPNET-1315153

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.