Description
Jenkins before 2.3 and LTS before 1.651.2 allow remote authenticated users with multiple accounts to cause a denial of service (unable to login) by editing the "full name."
Remediation
References
https://www.cloudbees.com/jenkins-security-advisory-2016-05-11
https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2016-05-11
https://access.redhat.com/errata/RHSA-2016:1206
http://rhn.redhat.com/errata/RHSA-2016-1773.html