CVE-2023-49083
Medium
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.
SeverityMedium
CVSS5.9
Exploit probability—
ProductCryptography
PublishedNov 29, 2023
First seenNov 29, 2023
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- cryptography.io cryptography41.0.6 or later
- cryptography41.0.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cryptography.io cryptography | 3.1 ≤ v < 41.0.6 | 41.0.6 |
| cryptographyPyPI | 3.1 ≤ v < 41.0.6 | 41.0.6 |
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