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THREATINT
PUBLISHED

CVE-2023-6717

Keycloak: xss via assertion consumer service url in saml post-binding flow

Reserved:2023-12-12
Published:2024-04-25
Updated:2024-05-21

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.



MEDIUM: 6.0CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L

Problem types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
affected

22.0.10-1 before *
unaffected

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affected

22-13 before *
unaffected

Default status
affected

22-16 before *
unaffected

Default status
unaffected

Default status
unaffected

Default status
affected

Default status
affected

Default status
unknown

Default status
unaffected

Default status
unknown

Default status
unknown

Default status
affected

Default status
unknown

Default status
unknown

Default status
unknown

Default status
unknown

Default status
unknown

Default status
unaffected

Default status
unaffected

Default status
unaffected

Default status
unknown

Default status
unknown

Default status
unknown

Default status
unknown

Timeline

2023-12-11:Reported to Red Hat.
2024-04-16:Made public.

References

https://access.redhat.com/errata/RHSA-2024:1867 (RHSA-2024:1867) vendor-advisory

https://access.redhat.com/errata/RHSA-2024:1868 (RHSA-2024:1868) vendor-advisory

https://access.redhat.com/errata/RHSA-2024:2945 (RHSA-2024:2945) vendor-advisory

https://access.redhat.com/security/cve/CVE-2023-6717 vdb-entry

https://bugzilla.redhat.com/show_bug.cgi?id=2253952 (RHBZ#2253952) issue-tracking

cve.org CVE-2023-6717

nvd.nist.gov CVE-2023-6717

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