CVE-2020-25459: An issue was discovered in function sync_tree in hetero_decision_tree_guest.py in WeBank FATE (Federated AI Technology E

CVE-2020-25459 is a vulnerability in WeBank FATE (Federated AI Technology Enabler, a system for training machine learning models across multiple parties) versions 0.1 through 1.4.2 that allows attackers to read sensitive information during the training process. The issue exists in a function called sync_tree in the hetero_decision_tree_guest.py file, which means attackers could access private data while the model is being trained.