Description
A missing permission check in Jenkins Gearman Plugin in the GearmanPluginConfig#doTestConnection form validation method allows attackers with Overall/Read permission to initiate a connection to an attacker-specified server.
Remediation
References
https://jenkins.io/security/advisory/2019-04-03/#SECURITY-991
http://www.securityfocus.com/bid/107790
http://www.openwall.com/lists/oss-security/2019/04/12/2