CVE-2019-20436
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.
Does this matter?
Lower severity and a low EPSS score (1.37%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.37% probability · 70th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- wso2/api manager · wso2/identity server
- Source
- cve@mitre.org
References
- https://cybersecurityworks.com/zerodays/cve-2019-20436-wso2.htmlExploit, Third Party Advisory
- https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0634Vendor Advisory
- https://github.com/cybersecurityworks/Disclosed/issues/19Exploit, Third Party Advisory
- https://cybersecurityworks.com/zerodays/cve-2019-20436-wso2.htmlExploit, Third Party Advisory
- https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0634Vendor Advisory
- https://github.com/cybersecurityworks/Disclosed/issues/19Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.