CVE-2021-27215

Public Exploit

Description

An issue was discovered in genua genugate before 9.0 Z p19, 9.1.x through 9.6.x before 9.6 p7, and 10.x before 10.1 p4. The Web Interfaces (Admin, Userweb, Sidechannel) can use different methods to perform the authentication of a user. A specific authentication method during login does not check the provided data (when a certain manipulation occurs) and returns OK for any authentication request. This allows an attacker to login to the admin panel as a user of his choice, e.g., the root user (with highest privileges) or even a non-existing user.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.78% Top 30%
Vendor Advisory genua.de
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.genua.de/en/it-security-solutions/high-resistance-firewall-genugate product
https://kunde.genua.de/en/overview/genugate.html patch vendor advisory
https://sec-consult.com/vulnerability-lab/advisory/authentication-bypass-genua-genugate/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-27215?
CVE-2021-27215 has been scored as a critical severity vulnerability.
How to fix CVE-2021-27215?
To fix CVE-2021-27215, 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-2021-27215 being actively exploited in the wild?
It is possible that CVE-2021-27215 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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