Published: 2nd September 2021
CVSS Score: 6.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L)
WSO2 API Manager : 2.6.0 , 3.0.0 , 3.1.0 , 3.2.0
WSO2 IS as Key Manager : 5.7.0 , 5.9.0 , 5.10.0
WSO2 Identity Server : 5.7.0 , 5.8.0 , 5.9.0 , 5.10.0
Improper OAuth 2.0 tokens validation vulnerability.
The vulnerability leads to treating the access tokens and the refresh tokens of disabled user accounts as active when validated.
Due to this vulnerability, a disabled user with an already issued access token or a refresh token might be able to access resources which are now unauthorized. This may impact confidentiality, integrity and availability of those resources, depending on the provided functionality.
If 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. Otherwise you may apply the relevant fixes to the product based on the public fix: https://github.com/wso2-extensions/identity-inbound-auth-oauth/pull/1501
Note: If you are a WSO2 customer with Support Subscription, please use WSO2 Updates in order to apply the fix.