Description
An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.
Remediation
References
https://nifi.apache.org/security.html#CVE-2017-12623
Related Vulnerabilities
CVE-2016-3088 Vulnerability in maven package org.apache.activemq:activemq-fileserver
CVE-2023-37959 Vulnerability in maven package org.jenkins-ci.plugins:sumologic-publisher
CVE-2015-5262 Vulnerability in maven package org.apache.httpcomponents:httpclient
CVE-2020-2196 Vulnerability in maven package org.jenkins-ci.plugins:selenium