Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an issue in the Jenkins user database authentication realm: create an account if signup is enabled; or create an account if the victim is an administrator, possibly deleting the existing default admin user in the process and allowing a wide variety of impacts.
References
- https://nvd.nist.gov/vuln/detail/CVE-2017-1000356
- https://jenkins.io/security/advisory/2017-04-26/
- http://www.securityfocus.com/bid/98062
- https://github.com/jenkinsci/jenkins/commit/23f4809e6c10a221e9d67f2e841536845387b42d
- https://github.com/jenkinsci/jenkins/commit/3c5e5ca63d9a1ac1c4087682dc0d426625eafed8
- https://github.com/jenkinsci/jenkins/commit/e69c28e44dae41322112471e1c80f840bde314d4
- https://github.com/advisories/GHSA-85wq-pqhp-hmq6