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
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CVE-2019-20174 Vulnerability in npm package auth0-lock
CVE-2022-45397 Vulnerability in maven package org.jenkins-ci.plugins:osf-builder-suite-xml-linter
CVE-2022-34797 Vulnerability in maven package org.jenkins-ci.plugins:ec2-deployment-dashboard
CVE-2018-1000105 Vulnerability in maven package org.jenkins-ci.plugins:gerrit-trigger