cve/2023/CVE-2023-49083.md

CVE-2023-49083

Description

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling load_pem_pkcs7_certificates or load_der_pkcs7_certificates could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6.

POC

Reference

• http://www.openwall.com/lists/oss-security/2023/11/29/2
• https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97

Github

• https://github.com/fkie-cad/nvd-json-data-feeds
• https://github.com/seal-community/patches