CVE-2021-41372: Power BI Report Server Spoofing Vulnerability
First published: Wed Nov 10 2021(Updated: )
A Cross-Site Scripting (XSS) and Cross-Site Request Forgery (CSRF) vulnerability exists when Power BI Report Server Template file (pbix) containing HTML files is uploaded to the server and HTML files are accessed directly by the victim. Combining these 2 vulnerabilities together, an attacker is able to upload malicious Power BI templates files to the server using the victim's session and run scripts in the security context of the user and perform privilege escalation in case the victim has admin privileges when the victim access one of the HTML files present in the malicious Power BI template uploaded. The security update addresses the vulnerability by helping to ensure that Power BI Report Server properly sanitize file uploads.
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| =15.0.1107.165 | ||
| Microsoft Power BI Report Server | =15.0.1107.165 |
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Frequently Asked Questions
What is the severity of CVE-2021-41372?
CVE-2021-41372 has been assessed with a medium severity rating due to its potential to exploit both XSS and CSRF vulnerabilities.
How do I fix CVE-2021-41372?
To mitigate CVE-2021-41372, users should apply the latest security patches provided by Microsoft for Power BI Report Server.
Who is affected by CVE-2021-41372?
CVE-2021-41372 affects users of Microsoft Power BI Report Server version 15.0.1107.165.
What types of attacks can CVE-2021-41372 enable?
CVE-2021-41372 can enable cross-site scripting (XSS) and cross-site request forgery (CSRF) attacks if exploited.
Is there a workaround for CVE-2021-41372?
Currently, there are no official workarounds for CVE-2021-41372 other than applying the security updates.
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