Description
In Jenkins Script Security Plugin version 1.36 and earlier, users with the ability to configure sandboxed Groovy scripts are able to use a type coercion feature in Groovy to create new `File` objects from strings. This allowed reading arbitrary files on the Jenkins master file system. Such a type coercion is now subject to sandbox protection and considered to be a call to the `new File(String)` constructor for the purpose of in-process script approval.
Remediation
References
https://jenkins.io/security/advisory/2017-12-11/
Related Vulnerabilities
CVE-2020-2138 Vulnerability in maven package org.jenkins-ci.plugins:cobertura
CVE-2018-10054 Vulnerability in maven package com.datomic:datomic-free
CVE-2020-13931 Vulnerability in maven package org.apache.tomee:openejb-loader
CVE-2018-10912 Vulnerability in maven package org.keycloak:keycloak-model-infinispan