Security Advisory WSO2-2019-0618

Published: 07th October 2019

Severity: Medium

CVSS Score: 5.4 (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N) 

AFFECTED PRODUCTS

WSO2 API Manager

WSO2 IS as Key Manager

WSO2 Identity Server

OVERVIEW

Potential Cross-Site Scripting (XSS) vulnerabilities have been identified in the authentication endpoint web application in WSO2 products.

DESCRIPTION

XSS attack could be performed in the API based-basicauth.jsp, basicauth.jsp and login.jsp pages of the authentication endpoint by sending an HTTP GET request with a harmful request parameter.

IMPACT

By leveraging an XSS attack, an attacker can make the browser get redirected to a malicious website, make changes in the UI of the web page, retrieve information from the browser or harm otherwise. However, since all the session related sensitive cookies are set with httpOnly flag and protected, session hijacking or similar attacks would not be possible.

SOLUTION

Apply the following patch based on your product version by following the instructions in the README file. If you have any questions, post them to security@wso2.com.

Please download the relevant patch based on the product you use following the matrix below. The patch can also be downloaded from http://wso2.com/security-patch-releases/.

Note: If you are a WSO2 customer with Support Subscription, please use WSO2 Update Manager (WUM) updates in order to apply the fix. This patch is intended for WSO2 community (free) users.

NOTES

If you are using newer versions of affected products than the ones mentioned in the “SOLUTION” section, this vulnerability is fixed. 

It is highly recommended to migrate older versions of the WSO2 products to the latest released version to receive security fixes.