Missing security restrictions in Keycloak

1) Protection Mechanism Failure

EUVDB-ID: #VU47487

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1728

CWE-ID: CWE-693 - Protection Mechanism Failure

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass expected security restrictions.

The vulnerability exists due to the Admin Console area in Keycloak is completely missing general HTTP security headers in HTTP-responses. This does not directly lead to a security issue, yet it might aid attackers in their efforts to exploit other problems. The flaws unnecessarily make the servers more prone to Clickjacking, channel downgrade attacks and other similar client-based attack vectors.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Keycloak: 0.6.0 - 9.0.3

CPE2.3

• cpe:2.3:a:keycloak:keycloak:7.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:keycloak:keycloak:6.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:keycloak:keycloak:9.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:keycloak:keycloak:8.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:keycloak:keycloak:1.9.8:*:*:*:*:*:*:*
• cpe:2.3:a:keycloak:keycloak:2.5.10:*:*:*:*:*:*:*
• cpe:2.3:a:keycloak:keycloak:3.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:keycloak:keycloak:4.8.3:*:*:*:*:*:*:*
• cpe:2.3:a:keycloak:keycloak:5.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:keycloak:keycloak:0.6.0:*:*:*:*:*:*:*

External links

http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1728

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user 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.