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Published: 11th January 27th October 2021

Version: 12.0.0

Severity: Critical

CVSS Score: 9.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N) 

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This vulnerability allows anyone to login if a valid username is known. However, "StartTLSEnabled" is not set to "true" by default. Therefore, a deployment is not impacted unless that configuration is turned on explicitly.


SOLUTION

If you are using an affected product version, it is highly recommended to migrate to the latest released version to the latest version of the affected WSO2 product is not mentioned under the affected product list, you may migrate to the latest version to receive security fixes. You Otherwise you may also apply the relevant fixes to the product based on the changes from the public fix: https://github.com/wso2/carbon-kernel/pull/2835

Note: If you are a WSO2 customer with Support Subscription, please use WSO2 Update Manager (WUM) updates please use WSO2 Updates in order to apply the fix.


CREDITS

WSO2 thanks, Thomas BIZOUERNEfor responsibly reporting the identified issue and working with us as we addressed it.