Vulnerability identifier: #VU13192

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7639

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
QNAP Proxy Server
Server applications / Web servers

Vendor: QNAP Systems, Inc.

Description
The vulnerability allows a remote attacker to bypass authentication on the target system.

The weakness exists due to improper authentication of requests. A remote attacker can bypass security restrictions and change the settings of Proxy Server.

Mitigation
Update to version 1.2.1. or 1.3.0.

Vulnerable software versions

QNAP Proxy Server: 1.0.2 - 1.2.0

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External links
http://www.qnap.com/en/security-advisory/nas-201806-01

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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.