요약
- CVE-2023-6717은(는) org.keycloak:keycloak-services에 영향을 주는 보통 (CVSS 6.0) 취약점입니다.
- 향후 30일 내 악용 확률(EPSS): 0.71%, 전체 취약점의 53.6%보다 높음.
- 조치: 24.0.3, 22.0.10 이상으로 업데이트하세요.
Description
Keycloak allows arbitrary URLs as SAML Assertion Consumer Service POST Binding URL (ACS), including JavaScript URIs (javascript:).
Allowing JavaScript URIs in combination with HTML forms leads to JavaScript evaluation in the context of the embedding origin on form submission.
Acknowledgements:
Special thanks to Lauritz Holtmann for reporting this issue and helping us improve our project.
NVD 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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