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-2020-12265 Vulnerability in maven package org.webjars.npm:decompress-tar
CVE-2020-36048 Vulnerability in maven package org.webjars.bower:engine.io
CVE-2016-2402 Vulnerability in maven package com.squareup.okhttp:okhttp
CVE-2016-4978 Vulnerability in maven package org.apache.activemq:artemis-jms-client
CVE-2021-39149 Vulnerability in maven package com.thoughtworks.xstream:xstream