Description
Jenkins 2.286 and earlier, LTS 2.277.1 and earlier does not validate the type of object created after loading the data submitted to the `config.xml` REST API endpoint of a node, allowing attackers with Computer/Configure permission to replace a node with one of a different type.
Remediation
References
http://www.openwall.com/lists/oss-security/2021/04/07/2
https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-1721
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