NULL Pointer Dereference Affecting python-cryptography package, versions *



    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.06% (23rd percentile)
Expand this section
7.5 high
Expand this section
5.5 medium
Expand this section
Red Hat
7.5 high

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • published 30 Nov 2023
  • disclosed 29 Nov 2023

How to fix?

There is no fixed version for Debian:12 python-cryptography.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-cryptography package and not the python-cryptography package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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.