Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-pf38-cw3p-22q9
Advisory ID github_osv/GHSA-pf38-cw3p-22q9
Aliases CVE-2021-3424
Summary Keycloak is vulnerable to IDN homograph attack 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.
Status Published
Exploitability 0.5
Weighted Severity 4.8
Risk 2.4
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-287 Improper Authentication
System Score Found at
cvssv3.1 5.3 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/04/GHSA-pf38-cw3p-22q9/GHSA-pf38-cw3p-22q9.json
generic_textual MODERATE
Reference id Reference type URL
https://github.com/keycloak/keycloak
1933320 Bug https://bugzilla.redhat.com/show_bug.cgi?id=1933320
CVE-2021-3424 https://nvd.nist.gov/vuln/detail/CVE-2021-3424
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/04/GHSA-pf38-cw3p-22q9/GHSA-pf38-cw3p-22q9.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.