CVE-2023-49083: NULL Pointer Dereference
(updated )
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.
References
- www.openwall.com/lists/oss-security/2023/11/29/2
- github.com/advisories/GHSA-jfhm-5ghh-2f97
- github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a
- github.com/pyca/cryptography/pull/9926
- github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97
- nvd.nist.gov/vuln/detail/CVE-2023-49083
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