Deserialization of Untrusted Data Affecting nvflare package, versions [,2.1.4)
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Test your applications- Snyk ID SNYK-PYTHON-NVFLARE-3012887
- published 1 Sep 2022
- disclosed 31 Aug 2022
- credit Oliver Sellwood (Nintorac) and Elias Hohl
Introduced: 31 Aug 2022
CVE-2022-34668 Open this link in a new tabHow to fix?
Upgrade nvflare to version 2.1.4 or higher.
Overview
nvflare is a Federated Learning Application Runtime Environment
Affected versions of this package are vulnerable to Deserialization of Untrusted Data due to the possibility of using the Pickle module by an unprivileged network attacker.
Details
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.