CVE-2021-41372

Power BI Report Server Spoofing Vulnerability

Description

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.

Category

7.6
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.35%
Vendor Advisory microsoft.com
Affected: Microsoft Power BI Report Server version 1.11.8091.10468
Affected: Microsoft Power BI Report Server version 1.12.7977.29537
Published at:
Updated at:

References

Link Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41372 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-41372?
CVE-2021-41372 has been scored as a high severity vulnerability.
How to fix CVE-2021-41372?
To fix CVE-2021-41372, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-41372 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-41372 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-41372?
CVE-2021-41372 affects Microsoft Power BI Report Server version 1.11.8091.10468, Microsoft Power BI Report Server version 1.12.7977.29537.
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