Description
Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not check agent-to-controller access to create parent directories in FilePath#mkdirs.
Remediation
References
http://www.openwall.com/lists/oss-security/2021/11/04/3
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
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