Vulnerability Details CVE-2019-20437
An issue was discovered in WSO2 API Manager 2.6.0, WSO2 IS as Key Manager 5.7.0, and WSO2 Identity Server 5.8.0. When a custom claim dialect with an XSS payload is configured in the identity provider basic claim configuration, that payload gets executed, if a user picks up that dialect's URI as the provisioning claim in the advanced claim configuration of the same Identity Provider. The attacker also needs to have privileges to log in to the management console, and to add and update identity provider configurations.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.011
EPSS Ranking 77.1%
CVSS Severity
CVSS v3 Score 6.1
CVSS v2 Score 4.3
References
- https://cybersecurityworks.com/zerodays/cve-2019-20437-wso2.html
- https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0635
- https://github.com/cybersecurityworks/Disclosed/issues/20
- https://cybersecurityworks.com/zerodays/cve-2019-20437-wso2.html
- https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0635
- https://github.com/cybersecurityworks/Disclosed/issues/20
Products affected by CVE-2019-20437
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cpe:2.3:a:wso2:api_manager:2.6.0
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cpe:2.3:a:wso2:identity_server:5.7.0
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cpe:2.3:a:wso2:identity_server:5.8.0