Security Advisory WSO2-2020-0684

Published: April 04, 2020

Version: 1.0.0

Severity: Medium

CVSS Score: 4.0 (CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:L)

AFFECTED PRODUCTS

  • WSO2 Enterprise Integrator : 6.6.0 or earlier

OVERVIEW

XXE vulnerability where a user with admin console access can use the XML validator to make unintended network invocations.

DESCRIPTION

A potential XXE has been identified in the XML validator. Due to this issue a user with admin console access can use the XML validator to make unintended network invocations via a file upload.

IMPACT

The XXE attacks can affect any trusted system respective to the machine where the parser is located. This attack may result in disclosing local files, denial of service, server-side request forgery, port scanning and other system impacts on affected systems.

SOLUTION

If you are using an affected product version, it is highly recommended to migrate to the latest released version to receive security fixes.

Otherwise, you may apply the relevant fixes to the product based on the public fix(s):

Info

If you are a WSO2 customer with a support subscription, use WSO2 Update Manager(WUM) updates in order to apply the fix to the affected versions.

CREDITS

WSO2 thanks, Krzysztof Przybylski for responsibly reporting the identified issue and working with us as we addressed it.