cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Starting in version 38.0.0 and prior to version 42.0.4, if pkcs12.serialize_key_and_certificates is called with both a certificate whose public key did not match the provided private key and an encryption_algorithm with hmac_hash set (via PrivateFormat.PKCS12.encryption_builder().hmac_hash(...), then a NULL pointer dereference would occur, crashing the Python process. This has been resolved in version 42.0.4, the first version in which a ValueError is properly raised.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Red Hat Ansible Automation Platform 2.4 for RHEL 8 | RedHat | python3x-cryptography-0:42.0.5-1.el8ap | * |
| Red Hat Ansible Automation Platform 2.4 for RHEL 9 | RedHat | python-cryptography-0:42.0.5-1.el9ap | * |
| Python-cryptography | Ubuntu | bionic | * |
| Python-cryptography | Ubuntu | devel | * |
| Python-cryptography | Ubuntu | mantic | * |
| Python-cryptography | Ubuntu | noble | * |
| Python-cryptography | Ubuntu | xenial | * |