Description
In Apache NiFi 1.0.0 to 1.11.4, the notification service manager and various policy authorizer and user group provider objects allowed trusted administrators to inadvertently configure a potentially malicious XML file. The XML file has the ability to make external calls to services (via XXE).
Remediation
References
https://nifi.apache.org/security#CVE-2020-13940
Related Vulnerabilities
CVE-2017-15703 Vulnerability in maven package org.apache.nifi:nifi-web-security
CVE-2013-1965 Vulnerability in maven package org.apache.struts:struts2-showcase
CVE-2021-23265 Vulnerability in maven package org.craftercms:crafter-core
CVE-2016-0733 Vulnerability in maven package org.apache.ranger:ranger
CVE-2023-40037 Vulnerability in maven package org.apache.nifi:nifi-dbcp-base