Multiple vulnerabilities in QNAP Systems QTS and Photo Station



| Updated: 2020-05-20
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2019-7195
CVE-2019-7194
CVE-2019-7193
CVE-2019-7192
CWE-ID CWE-610
CWE-20
CWE-284
Exploitation vector Network
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerability #2 is being exploited in the wild.
Vulnerability #3 is being exploited in the wild.
Vulnerability #4 is being exploited in the wild.
Vulnerable software
 QNAP QTS
Server applications / File servers (FTP/HTTP)

Photo Station
Client/Desktop applications / Other client software

Vendor QNAP Systems, Inc.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Externally Controlled Reference to a Resource in Another Sphere

EUVDB-ID: #VU28117

Risk: High

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2019-7195

CWE-ID: CWE-610 - Externally Controlled Reference to a Resource in Another Sphere

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the affected software uses an externally controlled name or reference that resolves to a resource that is outside of the intended control sphere. A remote attacker can access or modify system files.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

QNAP QTS: 4.2.6 2018082 - 4.4.1.1033 20190818

Photo Station: 5.2.0 - 6.0.2

CPE2.3 External links

http://www.qnap.com/zh-tw/security-advisory/nas-201911-25


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.

2) Externally Controlled Reference to a Resource in Another Sphere

EUVDB-ID: #VU28116

Risk: High

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2019-7194

CWE-ID: CWE-610 - Externally Controlled Reference to a Resource in Another Sphere

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the affected software uses an externally controlled name or reference that resolves to a resource that is outside of the intended control sphere. A remote attacker can access or modify system files.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

QNAP QTS: 4.2.6 2018082 - 4.4.1.1033 20190818

Photo Station: 5.2.0 - 6.0.2

CPE2.3 External links

http://www.qnap.com/zh-tw/security-advisory/nas-201911-25


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.

3) Input validation error

EUVDB-ID: #VU28115

Risk: High

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2019-7193

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can pass specially crafted input to the application and execute arbitrarycode on the target system.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

QNAP QTS: 4.2.6 2018082 - 4.4.1.1033 20190818

Photo Station: 5.2.0 - 6.0.2

CPE2.3 External links

http://www.qnap.com/zh-tw/security-advisory/nas-201911-25


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.

4) Improper access control

EUVDB-ID: #VU28114

Risk: High

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2019-7192

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote attacker can bypass implemented security restrictions and gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

QNAP QTS: 4.2.6 2018082 - 4.4.1.1033 20190818

Photo Station: 5.2.0 - 6.0.2

CPE2.3 External links

http://www.qnap.com/zh-tw/security-advisory/nas-201911-25


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.



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