Description
An information exposure vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier, and the Stapler framework used by these releases, in core/src/main/java/org/kohsuke/stapler/RequestImpl.java, core/src/main/java/hudson/model/Descriptor.java that allows attackers with Overall/Administer permission or access to the local file system to obtain credentials entered by users if the form submission could not be successfully processed.
Remediation
References
https://jenkins.io/security/advisory/2018-10-10/#SECURITY-765
http://www.securityfocus.com/bid/106532