#VU48911 Path traversal in FileZen - CVE-2020-5639

Vulnerability identifier: #VU48911

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-5639

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FileZen
Client/Desktop applications / Other client software

Vendor: Soliton Systems

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 upload an arbitrary file in the specific directory in the product.

Mitigation
Install update from vendor's website.

Vulnerable software versions

FileZen: 3.0.0 - 4.2.2

---

External links
https://jvn.jp/en/jp/JVN12884935/index.html
https://www.soliton.co.jp/support/2020/004278.html

---

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.