Medium severity · published Jun 1, 2021
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
5.3
CVSS
0.8%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SS
Single Sign-on · Redhat
7.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3424
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3424
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1933320
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