Denial of service in QNAP QTS, QuTS hero, QuTScloud, and QVP (QVR Pro appliances)

1) Resource exhaustion

EUVDB-ID: #VU78741

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-27600

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

QNAP QTS: before 4.5.4.2280 20230112, 5.0.1.2277 20230112, 4.5.4.2280 20230112

QuTS hero: before h4.5.4.2374 build 20230417

QuTScloud: before c5.0.1.2374 build 20230419

QVP (QVR Pro appliances): before 2.3.1.0476

CPE2.3

• cpe:2.3:a:qnap_systems:qnap_qts:*:*:*:*:*:*:*:*
• cpe:2.3:h:qnap_systems:quts-hero:*:*:*:*:*:*:*:*
• cpe:2.3:o:qnap_systems:qutscloud:*:*:*:*:*:*:*:*
• cpe:2.3:h:qnap_systems:qvp_qvr_pro_appliances:*:*:*:*:*:*:*:*

External links

https://www.qnap.com/en/security-advisory/qsa-23-09

Q & A

Can this vulnerability be exploited remotely?

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