Jenkins Crowd Integration Plugin stores credentials unencrypted in the global config.xml configuration file on the Jenkins master where they can be viewed by users with access to the master file system.

References

• https://nvd.nist.gov/vuln/detail/CVE-2019-1003097
• https://jenkins.io/security/advisory/2019-04-03/#SECURITY-1069
• http://www.openwall.com/lists/oss-security/2019/04/12/2
• http://www.securityfocus.com/bid/107790