CVE-2024-26130

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.

If pkcs12.serialize_key_and_certificates is called with both:

1. A certificate whose public key did not match the provided private key
2. 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, and now a ValueError is properly raised.

Patched in https://github.com/pyca/cryptography/pull/10423

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.

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.

Security Fix(es):

• python-cryptography: NULL pointer dereference with pkcs12.serialize_key_and_certificates when called with a non-matching certificate and private key and an hmac_hash override (CVE-2024-26130)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Root has patched CVE-2024-26130 in the cryptography package for Root:PyPI. Multiple fixed versions available.

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.

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.

Security Fix(es):

• python-cryptography: NULL pointer dereference with pkcs12.serialize_key_and_certificates when called with a non-matching certificate and private key and an hmac_hash override (CVE-2024-26130)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

TuxCare rebuilt cryptography to address 2 CVEs. Fixed in 42.0.0.post1+tuxcare.

TuxCare rebuilt cryptography to address 2 CVEs. Fixed in 41.0.7.post1+tuxcare.

Cryptography vulnerable to NULL-dereference when loading PKCS7 certificates. (CVE-2023-49083) Python-cryptography: bleichenbacher timing oracle attack against rsa decryption - incomplete fix for cve-2020-25659. (CVE-2023-50782) Cryptography NULL pointer deference with pkcs12.serialize_key_and_certificates when called with a non-matching certificate and private key and an hmac_hash override. (CVE-2024-26130)

These are all security issues fixed in the python310-cryptography-42.0.4-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the python313-cryptography-50.0.0-1.1 package on the GA media of openSUSE Tumbleweed.

This update for python-cryptography fixes the following issues:

• CVE-2024-26130: Fixed NULL pointer dereference in pkcs12.serialize_key_and_certificates() (bsc#1220210).

This update for python-cryptography fixes the following issues:

• CVE-2024-26130: Fix a NULL pointer dereference in pkcs12.serialize_key_and_certificates(). (bsc#1220210)

Hubert Kario discovered that python-cryptography incorrectly handled errors returned by the OpenSSL API when processing incorrect padding in RSA PKCS#1 v1.5. A remote attacker could possibly use this issue to expose confidential or sensitive information. (CVE-2023-50782)

It was discovered that python-cryptography incorrectly handled memory operations when processing mismatched PKCS#12 keys. A remote attacker could possibly use this issue to cause python-cryptography to crash, leading to a denial of service. This issue only affected Ubuntu 23.10. (CVE-2024-26130)

USN-6673-1 provided a security update for python-cryptography. This update provides the corresponding update for Ubuntu 24.04 LTS.

Original advisory details:

It was discovered that python-cryptography incorrectly handled memory operations when processing mismatched PKCS#12 keys. A remote attacker could possibly use this issue to cause python-cryptography to crash, leading to a denial of service. This issue only affected Ubuntu 23.10. (CVE-2024-26130)