CVE-2021-41372 is a vulnerability in Microsoft Power Bi Report Server
Published on November 10, 2021
Power BI Report Server Spoofing Vulnerability
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.
Products Associated with CVE-2021-41372
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Affected Versions
Microsoft Power BI Report Server version 1.11.8091.10468:- Version 1.0.0.0 and below 15.0.1106.457 is affected.
- Version 1.0.0.0 and below 15.0.1107.165 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.