What is CVE-2021-34361?

CVE-2021-34361 is a cross-site scripting (XSS) vulnerability that affects QNAP devices running Proxy Server.

How does CVE-2021-34361 work?

CVE-2021-34361 allows remote attackers to inject malicious code into QNAP devices through a cross-site scripting vulnerability.

What is the severity of CVE-2021-34361?

CVE-2021-34361 has a severity rating of medium, with a CVSS score of 6.1.

Which versions of Proxy Server are affected by CVE-2021-34361?

QNAP devices running Proxy Server versions up to 1.4.2 are affected by CVE-2021-34361.

How can I fix the CVE-2021-34361 vulnerability?

To fix the CVE-2021-34361 vulnerability, you should update Proxy Server to a version that is higher than 1.4.2, as recommended by QNAP.

Vulnerability/
CVE-2021-34361

medium

6.1

CWE

24/2/2022

4/8/2024

CVE-2021-34361: Reflected 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

Never miss a vulnerability like this again

Reference Links

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

Frequently Asked Questions

What is CVE-2021-34361?
CVE-2021-34361 is a cross-site scripting (XSS) vulnerability that affects QNAP devices running Proxy Server.
How does CVE-2021-34361 work?
CVE-2021-34361 allows remote attackers to inject malicious code into QNAP devices through a cross-site scripting vulnerability.
What is the severity of CVE-2021-34361?
CVE-2021-34361 has a severity rating of medium, with a CVSS score of 6.1.
Which versions of Proxy Server are affected by CVE-2021-34361?
QNAP devices running Proxy Server versions up to 1.4.2 are affected by CVE-2021-34361.
How can I fix the CVE-2021-34361 vulnerability?
To fix the CVE-2021-34361 vulnerability, you should update Proxy Server to a version that is higher than 1.4.2, as recommended by QNAP.

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