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8 vulnerabilities by cryptography.io

CVE-2024-26130 (GCVE-0-2024-26130)

Vulnerability from cvelistv5 – Published: 2024-02-21 16:28 – Updated: 2024-08-14 20:01
VLAI?
Summary
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Starting in version 38.0.0 and prior to version 42.0.4, if `pkcs12.serialize_key_and_certificates` is called with both a certificate whose public key did not match the provided private key and an `encryption_algorithm` with `hmac_hash` set (via `PrivateFormat.PKCS12.encryption_builder().hmac_hash(...)`, then a NULL pointer dereference would occur, crashing the Python process. This has been resolved in version 42.0.4, the first version in which a `ValueError` is properly raised.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
pyca cryptography Affected: >= 38.0.0, < 42.0.4
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CVE-2023-50782 (GCVE-0-2023-50782)

Vulnerability from cvelistv5 – Published: 2024-02-05 20:45 – Updated: 2025-11-20 17:33
VLAI?
Summary
A flaw was found in the python-cryptography package. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
References
Impacted products
Vendor Product Version
Affected: 3.2 , < 42.0.0 (semver)
Credits
This issue was discovered by Hubert Kario (Red Hat).
Show details on NVD website
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CVE-2023-49083 (GCVE-0-2023-49083)

Vulnerability from cvelistv5 – Published: 2023-11-29 18:50 – Updated: 2025-11-03 21:50
VLAI?
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.
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
Assigner
References
Impacted products
Vendor Product Version
pyca cryptography Affected: >= 3.1, < 41.0.6
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2023-38325 (GCVE-0-2023-38325)

Vulnerability from cvelistv5 – Published: 2023-07-14 00:00 – Updated: 2024-10-30 16:00
VLAI?
Summary
The cryptography package before 41.0.2 for Python mishandles SSH certificates that have critical options.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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CVE-2023-23931 (GCVE-0-2023-23931)

Vulnerability from cvelistv5 – Published: 2023-02-07 20:54 – Updated: 2025-11-03 21:47
VLAI?
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.
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
Assigner
References
Impacted products
Vendor Product Version
pyca cryptography Affected: >=1.8, < 39.0.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2020-36242 (GCVE-0-2020-36242)

Vulnerability from cvelistv5 – Published: 2021-02-07 19:50 – Updated: 2024-08-04 17:23
VLAI?
Summary
In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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CVE-2020-25659 (GCVE-0-2020-25659)

Vulnerability from cvelistv5 – Published: 2021-01-11 15:37 – Updated: 2024-08-04 15:40
VLAI?
Summary
python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via timed processing of valid PKCS#1 v1.5 ciphertext.
Severity ?
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a python-cryptography Affected: python-cryptography 3.2
Show details on NVD website
To clipboard 

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CVE-2016-9243 (GCVE-0-2016-9243)

Vulnerability from cvelistv5 – Published: 2017-03-27 17:00 – Updated: 2024-08-06 02:42
VLAI?
Summary
HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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