CVE-2023-6837

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.

Remediation

Solution:

For WSO2 Subscription holders, the recommended solution is to apply the provided patch/update to the affected versions of the products. If there are any instructions given with the patch/update, please make sure those are followed properly. Community users may apply the relevant fixes to the product based on the public fix(s) advertised in https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2022/WSO2-2021-1... https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2022/WSO2-2021-1573/

8.5

CVSS

Severity: High

CVSS 3.1 •

EPSS 0.44%

Vendor Advisory wso2.com

Affected: WSO2 WSO2 API Manager

Affected: WSO2 WSO2 Identity Server

Affected: WSO2 WSO2 IS as Key Manager

Affected: WSO2 WSO2 Carbon Identity Application Authentication Endpoint(Utils)

Affected: WSO2 WSO2 Carbon Identity Application Authentication Framework

References

Link	Tags
https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2022/WSO2-2021-1573/	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-6837?: CVE-2023-6837 has been scored as a high severity vulnerability.
How to fix CVE-2023-6837?: To fix CVE-2023-6837: For WSO2 Subscription holders, the recommended solution is to apply the provided patch/update to the affected versions of the products. If there are any instructions given with the patch/update, please make sure those are followed properly. Community users may apply the relevant fixes to the product based on the public fix(s) advertised in https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2022/WSO2-2021-1... https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2022/WSO2-2021-1573/
Is CVE-2023-6837 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-6837 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-6837?: CVE-2023-6837 affects WSO2 WSO2 API Manager, WSO2 WSO2 Identity Server, WSO2 WSO2 IS as Key Manager, WSO2 WSO2 Carbon Identity Application Authentication Endpoint(Utils), WSO2 WSO2 Carbon Identity Application Authentication Framework.