Deserialization of Untrusted Data Affecting checkov package, versions [,3.2.415)

checkov is an Infrastructure as code static analysis

Affected versions of this package are vulnerable to Deserialization of Untrusted Data via use of eval. An attacker can execute arbitrary code by submitting a specially crafted Terraform file for analysis. This is only exploitable if the user scans Terraform files from untrusted sources or pull requests.

This vulnerability can be mitigated by not running the tool on terraform files from untrusted sources or pull requests.

Serialization is a process of converting an object into a sequence of bytes which can be persisted to a disk or database or can be sent through streams. The reverse process of creating object from sequence of bytes is called deserialization. Serialization is commonly used for communication (sharing objects between multiple hosts) and persistence (store the object state in a file or a database). It is an integral part of popular protocols like Remote Method Invocation (RMI), Java Management Extension (JMX), Java Messaging System (JMS), Action Message Format (AMF), Java Server Faces (JSF) ViewState, etc.

Deserialization of untrusted data (CWE-502) is when the application deserializes untrusted data without sufficiently verifying that the resulting data will be valid, thus allowing the attacker to control the state or the flow of the execution.

• GitHub Commit
• Palo Alto Security Advisoiry