Keycloak: reflected xss via wildcard in oidc redirect_uri
CVE-2023-6134

4.6MEDIUM

Key Information:

Vendor
Red Hat
Status
Red Hat Build Of Keycloak 22
Red Hat Build Of Keycloak 22.0.7
Red Hat Single Sign-on 7.0
Red Hat Single Sign-on 7.6 For Rhel 7
Vendor
CVE Published:
14 December 2023

Summary

A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the result of an incomplete fix for CVE-2020-10748.

Affected Version(s)

Red Hat build of Keycloak 22 22.0.7-1

Red Hat build of Keycloak 22 22-6

Red Hat build of Keycloak 22 22-9

References

https://access.redhat.com/errata/RHSA-2023:7854
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7855
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7856
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
4.6
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database

Credit

Red Hat would like to thank Lauritz Holtmann (https://security.lauritz-holtmann.de/) for reporting this issue.
.