Multiple vulnerabilities in Red Hat Single Sign-On 7.4

1) Protection Mechanism Failure

EUVDB-ID: #VU47487

Risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

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

rh-sso7-keycloak (Red Hat package): before 9.0.5-1.redhat_00001.1.el7sso

Red Hat Single Sign-On: before 7.4.2

CPE2.3

• cpe:2.3:a:red_hat:rh-sso7-keycloak_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2020:3496

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

2) Allocation of Resources Without Limits or Throttling

EUVDB-ID: #VU47049

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-10758

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

A vulnerability was found in Keycloak before 11.0.1 where DoS attack is possible by sending twenty requests simultaneously to the specified keycloak server, all with a Content-Length header value that exceeds the actual byte count of the request body.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

rh-sso7-keycloak (Red Hat package): before 9.0.5-1.redhat_00001.1.el7sso

Red Hat Single Sign-On: before 7.4.2

CPE2.3

• cpe:2.3:a:red_hat:rh-sso7-keycloak_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2020:3496

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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