Multiple vulnerabilities in QNAP QTS



Published: 2021-04-02
Risk High
Patch available YES
Number of vulnerabilities 2
CVE ID CVE-2020-2509
CVE-2020-9490
CWE ID CWE-78
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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QNAP QTS
Server applications / File servers (FTP/HTTP)

Vendor QNAP Systems, Inc.

Security Advisory

1) OS Command Injection

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-2509

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation. A remote unauthenticated attacker can send specially crafted HTTP request to port 8080/TCP and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

QNAP QTS: 4.3.6.0805 20181228, 4.3.6.0895 20190328, 4.3.6.0907 20190409, 4.3.6.0923 20190425, 4.3.6.0944 20190516, 4.3.6.0959 20190531, 4.3.6.0979 20190620, 4.3.6.0993 20190704, 4.3.6.1013 20190724, 4.3.6.1033 20190813, 4.3.6.1070 20190919, 4.3.6.1154 20191212, 4.3.6.1218 20200214, 4.3.6.1263 20200330, 4.3.6.1286 20200422, 4.3.6.1333 20200608, 4.3.6.1411 20200825, 4.3.6.1446 20200929

CPE External links

https://www.qnap.com/en/release-notes/qts/4.3.6.1620/20210322

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?

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

2) Input validation error

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-9490

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing Cache-Digest header in HTTP/2 request. A remote attacker can pass specially crafted HTTP/2 request to the Apache HTTP Server, trigger the server to send the HTTP/2 PUSH and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

QNAP QTS: 4.3.6.0805 20181228, 4.3.6.0895 20190328, 4.3.6.0907 20190409, 4.3.6.0923 20190425, 4.3.6.0944 20190516, 4.3.6.0959 20190531, 4.3.6.0979 20190620, 4.3.6.0993 20190704, 4.3.6.1013 20190724, 4.3.6.1033 20190813, 4.3.6.1070 20190919, 4.3.6.1154 20191212, 4.3.6.1218 20200214, 4.3.6.1263 20200330, 4.3.6.1286 20200422, 4.3.6.1333 20200608, 4.3.6.1411 20200825, 4.3.6.1446 20200929

CPE External links

https://www.qnap.com/en/release-notes/qts/4.3.6.1620/20210322

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?

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



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