CVE-2023-6717: XSS (CVSS 6)

Description

A flaw was found in the SAML client registration in Keycloak that could allow an administrator to register malicious JavaScript URIs as Assertion Consumer Service POST Binding URLs (ACS), posing a Cross-Site Scripting (XSS) risk. This issue may allow a malicious admin in one realm or a client with registration access to target users in different realms or applications, executing arbitrary JavaScript in their contexts upon form submission. This can enable unauthorized access and harmful actions, compromising the confidentiality, integrity, and availability of the complete KC instance.

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CVSS v3.1 Score

6.0

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other References

https://access.redhat.com/errata/RHSA-2024:1353 https://access.redhat.com/errata/RHSA-2024:1867 https://access.redhat.com/errata/RHSA-2024:1868 https://access.redhat.com/errata/RHSA-2024:2945 https://access.redhat.com/errata/RHSA-2024:4057 https://access.redhat.com/security/cve/CVE-2023-6717 https://bugzilla.redhat.com/show_bug.cgi?id=2253952 https://access.redhat.com/errata/RHSA-2024:1867 https://access.redhat.com/errata/RHSA-2024:1868 https://access.redhat.com/errata/RHSA-2024:2945

Frequently Asked Questions

What is CVE-2023-6717? +

A flaw was found in the SAML client registration in Keycloak that could allow an administrator to register malicious JavaScript URIs as Assertion Consumer Service POST Binding URLs (ACS), posing a Cross-Site Scripting (XSS) risk. This issue may allow a malicious admin in one realm or a client with registration access to target users in different realms or applications, executing arbitrary JavaScript in their contexts upon form submission. This can enable unauthorized access and harmful actions, compromising the confidentiality, integrity, and availability of the complete KC instance. It has a CVSS v3.1 base score of 6.0 (MEDIUM).

How severe is CVE-2023-6717? +

CVE-2023-6717 has a CVSS v3.1 score of 6.0 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2023-6717? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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