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Published: 17th August 2020

Version: 2.0.0

Severity: Medium

CVSS Score:     XSS: 6.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

     Session Hijacking: 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) ) 


AFFECTED PRODUCTS

WSO2 API Manager : 3.2.0 or earlier
WSO2 API Manager Analytics : 2.5.0
WSO2 IS as Key Manager : 5.10.0 or earlier
WSO2 Identity Server : 5.10.0 or earlier
WSO2 Identity Server Analytics : 5.6.0 or earlier
WSO2 IoT Server : 3.1.0


OVERVIEW

Reflected Cross-Site Scripting (XSS) and Session Hijacking vulnerabilities in the SOAP service "Try it" tool.


DESCRIPTION

Reflected Cross-Site Scripting (XSS) vulnerability can be exploited by sending a request to the SOAP service "Try it" tool with a malicious JavaScript payload.

Carbon Management Console's session cookie of a legitimate user could get delivered to an attackercontrolled endpoint by tricking that user to submit a URL of SOAP service "Try it" tool with a malicious payload.


IMPACT

By leveraging the Reflected Cross-Site Scripting (XSS) vulnerability in the "Try it" tool, 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.

By leveraging the Session Hijacking vulnerability, it is possible to steal session cookies if the attacker-controlled environments are reachable from the Carbon Management Console nodes. Once the attacker receives the session cookies, they can use those to access the Carbon Management Console if they have network level access to it.

The risk from this Session Hijacking vulnerability would be reduced if the unwarranted inbound and outbound network access are blocked from Carbon Management Console nodes.


SOLUTION

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

You may also apply the relevant fixes based on the changes from the public fix: https://github.com/wso2/carbon-kernel/pull/2669, https://github.com/wso2/carbon-kernel/pull/2663https://github.com/wso2/carbon-kernel/pull/2662


NOTES

If you are a WSO2 customer with Support Subscription, please use WSO2 Update Manager (WUM) updates in order to apply the fix.

Change Log:

2020-09-24: API Manager 3.2.0 added to the affected product list.


CREDITS

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

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