Deserialization of Untrusted Data Affecting pimcore/pimcore package, versions <12.3.7

pimcore/pimcore is a content & product management framework (CMS/PIM/E-Commerce).

Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the unserialize process. An attacker can achieve arbitrary code execution by injecting malicious serialized PHP objects into database columns or filesystem files that are later deserialized without class restrictions. This is only exploitable if the attacker is able to write to the relevant data sources, such as through SQL injection or file write vulnerabilities.

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 Advisory
• GitHub Commit
• GitHub PR
• GitHub Release