Access of Resource Using Incompatible Type ('Type Confusion') Affecting cryptography package, versions [,39.0.1)
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Test your applications- Snyk ID SNYK-PYTHON-CRYPTOGRAPHY-3315328
- published 8 Feb 2023
- disclosed 7 Feb 2023
- credit David Benjamin
Introduced: 7 Feb 2023
CVE-2023-0286 Open this link in a new tabHow to fix?
Upgrade cryptography to version 39.0.1 or higher.
Overview
Affected versions of this package are vulnerable to Access of Resource Using Incompatible Type ('Type Confusion') in x509/v3_genn.c, when processing X.400 addresses with CRL checking enabled (e.g. when X509_V_FLAG_CRL_CHECK is set). An attacker in possession of both the certificate chain and CRL, of which neither needs a valid signature, can expose memory or cause a denial of service. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon.