Remote code execution in QNAP QTS

1) Improper access control

EUVDB-ID: #VU6420

Risk: Critical

CVSSv4.0: 9.3 [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:A/U:Red]

CVE-ID: N/A

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable device.

The vulnerability exists due to unknown error, which leads to QNAP device compromise. Vulnerability details are not disclosed yet.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable device.

Note: the vulnerability is being actively exploited in the wild.

Mitigation

Update your Photo Station on your NAS to the version 5.4.1 (or the version 5.2.7 if your NAS does not support QTS 4.3.x) immediately.

Vulnerable software versions

QNAP QTS: 4.2.5 20170413 - 4.3.3.0154 20170413

CPE2.3

• cpe:2.3:a:qnap_systems:qnap_qts:4.2.5:20170413:*:*:*:*:*:*
• cpe:2.3:a:qnap_systems:qnap_qts:4.3.3.0154:20170413:*:*:*:*:*:*

External links

https://www.qnap.com/en/support/con_show.php?cid=116

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?

Yes. This vulnerability is being exploited in the wild.