Auth bypass in Wso2 API Manager
CVE-2023-6837
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.
Vulnerability class: Broken Access Control
EPSS: 0.005 (38.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
Affected products
- Wso2 Api_manager
- Wso2 Carbon_identity_application_authentication_endpoint
- Wso2 Carbon_identity_application_authentication_framework
- Wso2 Identity_server
- Wso2 Identity_server_as_key_manager
- Wso2 Api Manager — versions 0, 2.5.0, 2.6.0
- Wso2 Carbon Identity Application Authentication Framework — versions 5.11.256, 5.12.153, 5.12.387
- Wso2 Identity Server — versions 0, 5.6.0, 5.7.0
- Wso2 Identity Server As Key Manager — versions 0, 5.6.0, 5.7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ed10eef1-636d-4fbe-9993-6890dfa878f8 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-6837?
- CVE-2023-6837 is a high-severity vulnerability in Wso2 API Manager, classified under Incorrect Authorization. CVSS score: 8.5/10. Published 2023-12-15.
- How severe is CVE-2023-6837?
- High severity. CVSS v3 base score is 8.5 out of 10.
- Is CVE-2023-6837 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.