The doIndex function in hudson/util/RemotingDiagnostics.java in CloudBees Jenkins before 1.551 and LTS before 1.532.2 allows remote authenticated users with the ADMINISTER permission to obtain sensitive information via vectors related to heapDump.
https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2014-02-14
https://github.com/jenkinsci/jenkins/commit/0530a6645aac10fec005614211660e98db44b5eb