Vulnerability identifier: #VU60526

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-38679

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
QNAP QTS
Server applications / File servers (FTP/HTTP)
QuTS hero
Hardware solutions / Firmware
Kazoo Server
Server applications / Other server solutions

Vendor: QNAP Systems, Inc.

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests. A remote attacker can bypass authentication process and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

QNAP QTS: 4.5.3

QuTS hero: h4.5.3

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External links
http://www.qnap.com/en/security-advisory/qsa-22-01

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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.