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-2020-2285 Vulnerability in maven package org.jenkins-ci.plugins:liquibase-runner
CVE-2020-27216 Vulnerability in maven package org.eclipse.jetty:jetty-webapp
CVE-2022-41251 Vulnerability in maven package org.jenkins-ci.plugins:apprenda
CVE-2021-21613 Vulnerability in maven package io.jenkins.plugins:tics
CVE-2021-3827 Vulnerability in maven package org.keycloak:keycloak-server-spi-private