CVE-2019-1003024

Existe una vulnerabilidad de omisión de sandbox en Jenkins Script Security Plugin, en versiones 1.52 y anteriores, en RejectASTTransformsCustomizer.java, que permite que los atacantes con permisos Overall/Read proporcionen un script de Groovy a un endpoint HTTP que puede resultar en la ejecución de código arbitrario en el JVM maestro de Jenkins.

A flaw was found in the Jenkins script security sandbox. The previously implemented script security sandbox protections prohibiting the use of unsafe AST transforming annotations such as @Grab could be circumvented through use of various Groovy language features including the use of AnnotationCollector, import aliasing, and referencing annotation types using their full class name. This allows users with Overall/Read permission, or the ability to control Jenkinsfile or sandboxed Pipeline shared library contents in SCM, to bypass the sandbox protection and execute arbitrary code on the Jenkins master. The highest threat from this vulnerability is to data confidentiality and integrity and system availability.