Multiple vulnerabilities in Red Hat Single Sign-On 7.6 on RHEL 8

1) Open redirect

EUVDB-ID: #VU85171

Risk: Low

CVSSv3.1: 3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-6927

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data. A remote attacker can steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt".

Mitigation

Install updates from vendor's website.

Vulnerable software versions

rh-sso7-keycloak (Red Hat package): before 18.0.11-3.redhat_00001.1.el8sso

External links

http://access.redhat.com/errata/RHSA-2024:0095

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.