#VU16036 Command injection in QNAP QTS - CVE-2018-14746

Vulnerability identifier: #VU16036

Vulnerability risk: Low

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:Clear]

CVE-ID: CVE-2018-14746

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
QNAP QTS
Server applications / File servers (FTP/HTTP)

Vendor: QNAP Systems, Inc.

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

The vulnerability exists due to insufficient filtering of user-provided input. A remote attacker can supply specially crafted input to inject and execute arbitrary commands with root privileges.

Mitigation
The vulnerability has been fixed in the versions 4.3.5 build 20181110, 4.3.4 build 20181026, 4.3.3 build 20181029, 4.2.6 build 20181026.

Vulnerable software versions

QNAP QTS: 4.2.6 2018082 - 4.2.6 20180711, 4.3.3 20170516 - 4.3.4.0589 20180520

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External links
https://www.qnap.com/en/security-advisory/nas-201811-22

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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