Headline
CVE-2021-34361: XSS Vulnerabilities in Proxy Server - Security Advisory
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
<< Back to Security Advisory List
- Release date: February 25, 2022
- Security ID: QSA-22-04
- Severity: Medium
- CVE identifier: CVE-2021-34359 | CVE-2021-34361
- Affected products: QNAP NAS running Proxy Server
- Status: Resolved
Summary
Cross-site scripting (XSS) vulnerabilities have been reported to affect QNAP NAS 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
Recommendation
To fix the vulnerabilities, we recommend updating Proxy Server to the latest version.
Updating Proxy Server
- Log on to QTS as administrator.
- Open the App Center and then click
.
A search box appears. - Enter "Proxy Server".
Proxy Server appears in the search results. - Click Update.
A confirmation message appears.
Note: The Update button is not available if your application is already up to date. - Click OK.
The application is updated.
Acknowledgements: Tony Martin, a security researcher
Revision History: V1.0 (February 25, 2022) - Published