Vulnerability in Cryptography.io Cryptography
CVE-2023-23931
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.013 (70.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Cryptography.io Cryptography
- Pyca Cryptography — versions >=1.8, < 39.0.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2023-23931?
- CVE-2023-23931 is a medium-severity vulnerability in Cryptography.io Cryptography, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 4.8/10. Published 2023-02-07.
- How severe is CVE-2023-23931?
- Medium severity. CVSS v3 base score is 4.8 out of 10.