Multiple vulnerabilities in QNAP QTS and QuTS hero

Published: 2021-07-01

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-28802 CVE-2021-28804
CWE-ID	CWE-77
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	QNAP QTS Server applications / File servers (FTP/HTTP) QuTS hero Hardware solutions / Firmware
Vendor	QNAP Systems, Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Command Injection

EUVDB-ID: #VU54488

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-28802

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary 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: before

QuTS hero: before h4.5.1.1582 build 20210217

CPE2.3

External links

https://www.qnap.com/zh-tw/security-advisory/qsa-21-29

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Command Injection

EUVDB-ID: #VU54489