CVE-2023-6837 Multiple WSO2 products vulnerable to perform user impersonatoin using JIT provisioning

What is CVE-2023-6837?

CVE-2023-6837 is a high-severity authentication bypass vulnerability in Wso2 Api Manager, published on 15 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-863

Which versions are affected by CVE-2023-6837?

4 open source packages ship an affected version, including org.wso2.carbon.identity.framework:org.wso2.carbon.identity.application.authentication.framework and org.wso2.identity.apps:authentication-portal. It affects 5 products.

Products include Wso2 Api Manager, Wso2 Carbon Identity Application Authentication Endpoint, Wso2 Carbon Identity Application Authentication Framework, Wso2 Identity Server, Wso2 Identity Server as Key Manager.

How do I fix CVE-2023-6837?

Upgrade org.wso2.carbon.identity.framework:org.wso2.carbon.identity.application.authentication.framework to 5.20.254 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-6837 being exploited?

There is no known exploitation of CVE-2023-6837 in the wild and no public exploit code.

Other vulnerabilities in Wso2 Api Manager

• CVE-2022-29464 WSO2 Multiple Products Unrestrictive Upload of File Exploited Critical 9.8
• CVE-2024-6914 Incorrect Authorization in Multiple WSO2 Products via Account Recovery SOAP Admin Service Leading to Account Takeover Critical 9.8
• CVE-2020-13226 WSO2 API Manager vulnerable to SSRF Critical 9.8
• CVE-2025-2905 An XML External Entity (XXE) vulnerability in Multiple WSO2 Products Critical 9.1
• CVE-2021-42646 XML external entity in n/a Critical 9.1

All Wso2 Api Manager vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-f6jm-9pr8-9c3w.