Brute-force protection bypass in Keycloak



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-4629
CWE-ID CWE-307
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Keycloak
Server applications / Directory software, identity management

Vendor Keycloak

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Restriction of Excessive Authentication Attempts

EUVDB-ID: #VU97468

Risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-4629

CWE-ID: CWE-307 - Improper Restriction of Excessive Authentication Attempts

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a brute-force attack.

The vulnerability exists due to an error when handling unsuccessful login attempts. A remote attacker can initiate multiple login requests simultaneously and bypass the configured limits for failed attempts before the system locks them out.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Keycloak: 19.0.0 - 25.0.3

CPE2.3 External links

https://bugzilla.redhat.com/show_bug.cgi?id=2276761
https://github.com/keycloak/keycloak/security/advisories/GHSA-gc7q-jgjv-vjr2


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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