What is CVE-2021-34359?

CVE-2021-34359 is a cross-site scripting (XSS) vulnerability that affects QNAP devices running Proxy Server.

How does CVE-2021-34359 affect QNAP devices?

If exploited, CVE-2021-34359 allows remote attackers to inject malicious code into QNAP devices running Proxy Server.

Which versions of Proxy Server are affected by CVE-2021-34359?

Versions of Proxy Server up to and excluding 1.4.2 are affected by CVE-2021-34359.

Has this vulnerability been fixed?

Yes, this vulnerability has been fixed in the following versions of Proxy Server: QTS 4.5.x: Proxy Server 1.4.2.

What is the severity of CVE-2021-34359?

CVE-2021-34359 has a severity rating of medium, with a CVSS score of 5.4.

Vulnerability/
CVE-2021-34359

medium

6.9

CWE

24/2/2022

4/8/2024

CVE-2021-34359: Stored XSS Vulnerability in Proxy Server

First published: Thu Feb 24 2022(Updated: )

A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running Proxy Server. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of Proxy Server: QTS 4.5.x: Proxy Server 1.4.2 ( 2021/12/30 ) and later

Credit: security@qnapsecurity.com.tw

Affected Software	Affected Version	How to fix
Qnap Nas Proxy Server	<1.4.2
QNAP QTS	>=4.5.1<=4.5.4

Remedy

We have already fixed this vulnerability in the following versions of Proxy Server: QTS 4.5.x: Proxy Server 1.4.2 ( 2021/12/30 ) and later

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Reference Links

https://www.qnap.com/en/security-advisory/qsa-22-04

Frequently Asked Questions

What is CVE-2021-34359?
CVE-2021-34359 is a cross-site scripting (XSS) vulnerability that affects QNAP devices running Proxy Server.
How does CVE-2021-34359 affect QNAP devices?
If exploited, CVE-2021-34359 allows remote attackers to inject malicious code into QNAP devices running Proxy Server.
Which versions of Proxy Server are affected by CVE-2021-34359?
Versions of Proxy Server up to and excluding 1.4.2 are affected by CVE-2021-34359.
Has this vulnerability been fixed?
Yes, this vulnerability has been fixed in the following versions of Proxy Server: QTS 4.5.x: Proxy Server 1.4.2.
What is the severity of CVE-2021-34359?
CVE-2021-34359 has a severity rating of medium, with a CVSS score of 5.4.

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version/qnap qts/4.5.4

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