Description
Jenkins Mailer Plugin 1.32 and earlier does not perform hostname validation when connecting to the configured SMTP server.
Remediation
References
http://www.openwall.com/lists/oss-security/2020/09/16/3
https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1813
Related Vulnerabilities
CVE-2020-2204 Vulnerability in maven package org.jenkins-ci.plugins:fortify-on-demand-uploader
CVE-2019-10363 Vulnerability in maven package io.jenkins:configuration-as-code
CVE-2023-40343 Vulnerability in maven package io.jenkins.plugins:tuleap-oauth
CVE-2023-40350 Vulnerability in maven package org.jenkins-ci.plugins:docker-swarm