CVE-2021-27215

high-risk

Published 2021-03-03

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.

Do I need to act?

0.71% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (20)

Genuagate

Affected Vendors

Genua

References (6)

Patch https://kunde.genua.de/en/overview/genugate.html

Exploit https://sec-consult.com/vulnerability-lab/advisory/authentication-bypass-genua-g...

Product https://www.genua.de/en/it-security-solutions/high-resistance-firewall-genugate

Patch https://kunde.genua.de/en/overview/genugate.html

Exploit https://sec-consult.com/vulnerability-lab/advisory/authentication-bypass-genua-g...

Product https://www.genua.de/en/it-security-solutions/high-resistance-firewall-genugate

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high-risk

Severity 32/34 · Critical

Exploitability 2/34 · Minimal

Exposure 23/34 · High