Description
A session fixation vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier in core/src/main/java/hudson/security/HudsonPrivateSecurityRealm.java that prevented Jenkins from invalidating the existing session and creating a new one when a user signed up for a new user account.
Remediation
References
http://www.securityfocus.com/bid/106532
https://jenkins.io/security/advisory/2018-10-10/#SECURITY-1158
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