Published: 2nd September 2021
Version: 2.0.0
Severity: Medium
CVSS Score: 4.6 (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N)
AFFECTED PRODUCTS
WSO2 API Manager : 3.0.0 or earlier
WSO2 API Manager Analytics : 2.2.0 , 2.5.0
WSO2 API Microgateway : 2.2.0
WSO2 Enterprise Integrator : 6.6.0 or earlier
WSO2 IS as Key Manager : .5.0 , 5.6.0 , 5.7.0 , 5.9.0
WSO2 Identity Server : 5.4.0 , 5.4.1 , 5.5.0 , 5.6.0
WSO2 Micro Integrator : 1.0.0
OVERVIEW
A potential XML External Entity (XXE) vulnerability has been identified in components used in API Manager.
DESCRIPTION
An XML External Entity (XXE) attack abuses a widely available but rarely used feature of XML parsers to access sensitive information.
IMPACT
The resolution of external entity references is enabled. Therefore, if attacker-controlled XML is submitted to the XML parser, then the attacker could gain access to information about an internal network, local filesystem, or other sensitive data.
SOLUTION
If the latest version of the affected WSO2 product is not mentioned under the affected product list, you may migrate to the latest version to receive security fixes. Otherwise you may apply the relevant fixes to the product based on the public fix: https://github.com/wso2/carbon-commons/pull/407, https://github.com/wso2/product-apim/pull/7456, https://github.com/wso2/carbon-registry/pull/348, https://github.com/wso2/carbon-event-processing/pull/316, https://github.com/wso2/carbon-analytics-common/pull/739, https://github.com/wso2/carbon-governance/pull/336
Note: If you are a WSO2 customer with Support Subscription, please use WSO2 Updates in order to apply the fix.
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