Home/CVE/A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout feature is enabled.
CVE

CVE-2021-3513

A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout feature is enabled.

A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout feature is enabled. This is due to a wrong error message displayed when wrong credentials are entered. The highest threat from this vulnerability is to confidentiality.

HIGH · CVSS 7.5 EPSS 0.00201
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-209Generation of Error Message Containing Sensitive Information
CWE-522Insufficiently Protected Credentials
▤

Affected Products & Versions

1
redhat keycloak< 13.0.0
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.keycloak:keycloak-parent HIGH fixed in 13.0.0
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Aug 2022 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

4
rhsaRHSA-2021:3534Important
rhsaRHSA-2021:3528Moderate
rhsaRHSA-2021:3527Moderate
rhsaRHSA-2021:3529Moderate
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2021-3513Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1953439Issue TrackingVendor Advisory
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