CVE-2019-20437: wso2 api_manager Cross-site Scripting

Vulnerability summary

CVE-2019-20437 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in wso2 api_manager. EPSS estimates a 1.28% chance of exploitation in the next 30 days, higher than 69.5% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 27-01-2020
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

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. 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.

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.