Vulnerability identifier: #VU86370

Vulnerability risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:F/RL:O/RC:C]

CVE-ID: CVE-2023-47218

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: QNAP Systems, Inc.

Description

The vulnerability allows a remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation. A remote authenticated user can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

QNAP QTS: 5.1.0 - 5.1.4.2596 20231128, 5.0.0 - 5.0.1.2514 20230906, 5.2.7, 4.5.0 - 4.5.4.2467 20230718, 4.4.0.0752 20181112 - 4.4.3.1444 20200930, 4.3.2 - 4.3.6: 1.10.1004, 4.2.6 - 4.2.6 20230621

QuTS hero: h4.5.0.1279 build 20200421 - h5.1.4.2596 build 20231128

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External links
http://www.qnap.com/en/security-advisory/qsa-23-57

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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, a fully functional exploit for this vulnerability is available.