CVE-2019-20436

moderate-risk
Published 2020-01-28

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. If there is a claim dialect configured with an XSS payload in the dialect URI, and a user picks up this dialect's URI and adds it as the service provider claim dialect while configuring the service provider, that payload gets executed. The attacker also needs to have privileges to log in to the management console, and to add and configure claim dialects.

Do I need to act?

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0.78% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.1/10 Medium
NETWORK / LOW complexity

Affected Products (3)

Affected Vendors

Wso2

References (6)

Exploit https://cybersecurityworks.com/zerodays/cve-2019-20436-wso2.html
Vendor Advisory https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0634
Exploit https://github.com/cybersecurityworks/Disclosed/issues/19
Exploit https://cybersecurityworks.com/zerodays/cve-2019-20436-wso2.html
Vendor Advisory https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0634
Exploit https://github.com/cybersecurityworks/Disclosed/issues/19
35
/ 100
moderate-risk
Severity 23/34 · High
Exploitability 3/34 · Minimal
Exposure 9/34 · Low