CVE-2023-6837: Incorrect Authorization in Multiple WSO2 Products via Federated Authentication with JIT Provisioning Leading to User Impersonation
Multiple WSO2 products have been identified as vulnerable to perform user impersonatoin using JIT provisioning. In order for this vulnerability to have any impact on your deployment, following conditions must be met:
An IDP configured for federated authentication and JIT provisioning enabled with the "Prompt for username, password and consent" option. A service provider that uses the above IDP for federated authentication and has the "Assert identity using mapped local subject identifier" flag enabled.
Attacker should have:
A fresh valid user account in the federated IDP that has not been used earlier. Knowledge of the username of a valid user in the local IDP.
When all preconditions are met, a malicious actor could use JIT provisioning flow to perform user impersonation.
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2023-6837?
CVE-2023-6837 has been classified with a high severity due to the risk of user impersonation.
How do I fix CVE-2023-6837?
To mitigate CVE-2023-6837, upgrade to the fixed versions of the affected WSO2 products, specifically those mentioned in the advisory.
Which WSO2 products are affected by CVE-2023-6837?
CVE-2023-6837 affects multiple WSO2 products, including various versions of the WSO2 API Manager and WSO2 Identity Server.
Can CVE-2023-6837 be exploited if I don't use JIT provisioning?
No, CVE-2023-6837 requires JIT provisioning to be enabled in an IDP for exploitation, meaning it's conditional.
What actions should I take to secure my WSO2 deployment against CVE-2023-6837?
To secure against CVE-2023-6837, regularly monitor for updates and ensure that your deployment is running the latest patched versions.