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2 vulnerabilities found for by pyca

CVE-2023-49083 (GCVE-0-2023-49083)
Vulnerability from cvelistv5
Published
2023-11-29 18:50
Modified
2025-11-03 21:50
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Summary
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
Impacted products
Vendor Product Version
pyca cryptography Version: >= 3.1, < 41.0.6
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Show details on NVD website

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CVE-2023-23931 (GCVE-0-2023-23931)
Vulnerability from cvelistv5
Published
2023-02-07 20:54
Modified
2025-11-03 21:47
Severity ?
4.8 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Summary
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In affected versions `Cipher.update_into` would accept Python objects which implement the buffer protocol, but provide only immutable buffers. This would allow immutable objects (such as `bytes`) to be mutated, thus violating fundamental rules of Python and resulting in corrupted output. This now correctly raises an exception. This issue has been present since `update_into` was originally introduced in cryptography 1.8.
References
Impacted products
Vendor Product Version
pyca cryptography Version: >=1.8, < 39.0.1
 Create a notification for this product.
Show details on NVD website

To clipboard 

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