Vulnerability · Published Nov 10, 2021 · Assigned by microsoft
CVE-2021-41372Power BI Report Server Spoofing Vulnerability
High 7.6
In plain English
A high-severity security flaw in Power BI Report Server version 1.11.8091.10468 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Power BI Report Server version 1.11.8091.10468 | 1.0.0.0 – before 1.11.8091.10468 |
| Microsoft | Power BI Report Server version 1.12.7977.29537 | 1.0.0.0 – before 1.12.7977.29537 |
References
- Power BI Report Server Spoofing Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41372 x_refsource_MISC, x_transferred