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MEDIUM · 5.3

CVE-2021-3424

A flaw was found in keycloak as shipped in Red Hat Single Sign-On 7.4 where IDN homograph attacks are possible. A malicious user can register himself with a name already registered and trick admin to ...

Vulnerability Description

A flaw was found in keycloak as shipped in Red Hat Single Sign-On 7.4 where IDN homograph attacks are possible. A malicious user can register himself with a name already registered and trick admin to grant him extra privileges.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE

Affected Products

VendorProductVersions
RedhatSingle Sign-On7.4

Related Weaknesses (CWE)

CWE-287

References

FAQ

What is CVE-2021-3424?

CVE-2021-3424 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A flaw was found in keycloak as shipped in Red Hat Single Sign-On 7.4 where IDN homograph attacks are possible. A malicious user can register himself with a name already registered and trick admin to ...

How severe is CVE-2021-3424?

CVE-2021-3424 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-3424?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Single Sign-On.