Jenkins Mailer Plugin prior to 408.vd726a_1130320 and 1.34.2 does not perform a permission check in a method implementing form validation.
This allows attackers with Overall/Read access to use the DNS used by the Jenkins instance to resolve an attacker-specified hostname.
Additionally, this form validation method does not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability.
Mailer Plugin 408.vd726a_1130320 and 1.34.2 require POST requests and Overall/Administer permission for the affected form validation method.
www.openwall.com/lists/oss-security/2022/01/12/6
github.com/jenkinsci/mailer-plugin
github.com/jenkinsci/mailer-plugin/commit/5e6051fae61a43564e22aa89cb24ed8a42a26052
nvd.nist.gov/vuln/detail/CVE-2022-20613
www.jenkins.io/security/advisory/2022-01-12/#SECURITY-2163
www.oracle.com/security-alerts/cpuapr2022.html