#VU61442 Path traversal in Tiny File Manager - CVE-2021-45010

Vulnerability identifier: #VU61442

Vulnerability risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2021-45010

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Tiny File Manager
Web applications / Modules and components for CMS

Vendor: Prasath Mani

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 in the file upload functionality in tinyfilemanager.php. A remote user can send a specially crafted HTTP request and upload arbitrary files on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Tiny File Manager: 2.4.6

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External links
https://github.com/prasathmani/tinyfilemanager/commit/2046bbde72ed76af0cfdcae082de629bcc4b44c7
https://github.com/prasathmani/tinyfilemanager/pull/636
https://raw.githubusercontent.com/febinrev/tinyfilemanager-2.4.6-exploit/main/exploit.sh
https://github.com/prasathmani/tinyfilemanager/pull/636/files/a93fc321a3c89fdb9bee860bf6df5d89083298d1
https://sploitus.com/exploit?id=1337DAY-ID-37364&utm_source=rss&utm_medium=rss
https://github.com/febinrev/tinyfilemanager-2.4.3-exploit/raw/main/exploit.sh
https://febin0x4e4a.wordpress.com/2022/01/23/tiny-file-manager-authenticated-rce/
https://packetstormsecurity.com/files/166330/Tiny-File-Manager-2.4.6-Shell-Upload.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.