Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
The MethodClosure class in runtime/MethodClosure.java in Apache Groovy's following packages, groovy and groovy-all through 2.4.7, groovy-eclipse-batch through 2.4.18-01 and 2.5.x up to 2.5.9-01, groovy-all-jdk14, groovy-all-minimal and groovy-jdk14 all their versions allow remote attackers to execute arbitrary code or cause a denial of service via a crafted serialized object.
CWE-74 - Injection
Listed as the number one web application security risk on the 'OWASP Top Ten', injection attacks are widespread and dangerous, especially in legacy applications. Injection attacks are a class of vulnerabilities in which an attacker injects untrusted data into a web application that gets processed by an interpreter, altering the program's execution. This can result in data loss/theft, loss of data integrity, denial of service, and even compromising the entire system.