|Number of vulnerabilities||1|
|Public exploit||Vulnerability #1 is being exploited in the wild.|
Server applications / File servers (FTP/HTTP)
Hardware solutions / Firmware
|Vendor||QNAP Systems, Inc.|
This security bulletin contains information about 1 vulnerabilities.
Raised severity level from High to Critical to reflect in-the-wild exploitation.
Exploit availability: NoDescription
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note, the vulnerability is being actively exploited in the wild by the DEADBOLT ransomware.Mitigation
Install updates from vendor's website.Vulnerable software versions
QNAP QTS: 188.8.131.526 20201015 - 184.108.40.2060 20211201
QuTS hero: h220.127.116.119 build 20200421 - h18.104.22.1686 Build 20211117
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.