Description
Jenkins SiteMonitor Plugin 0.5 and earlier disabled SSL/TLS and hostname verification globally for the Jenkins master JVM.
Remediation
References
http://www.openwall.com/lists/oss-security/2019/04/30/5
http://www.securityfocus.com/bid/108159
https://jenkins.io/security/advisory/2019-04-30/#SECURITY-930