CVE-2023-6837
HIGHMultiple 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,…
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
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.
Affected Products
api managerwso2carbon identity application authentication endpointwso2carbon identity application authentication frameworkwso2identity serverwso2identity server as key managerwso2Detection & mitigation playbook
Vendor / applianceDetect
Inventory every wso2 api manager deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Fix
Apply the wso2 api manager security patch or hotfix for CVE-2023-6837 on the affected version, following the vendor advisory for your exact build.
Workarounds
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2023-6837 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.
Tailored to CVE-2023-6837. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2023-6837 being exploited in your environment?
O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2023-6837 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.