What is CVE-2023-23931?

CVE-2023-23931 is a medium-severity vulnerability in Pyca 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.

Vulnerability in Pyca 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 b…

EPSS: 0.007 (72.2th percentile) — read the EPSS interpretation.

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.

Affected products

Pyca Cryptography — versions >=1.8, < 39.0.1

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

https://github.com/pyca/cryptography/security/advisories/GHSA-w7pp-m8wf-vj6r (x_refsource_CONFIRM)
https://github.com/pyca/cryptography/pull/8230/commits/94a50a9731f35405f0357fa5f3b177d46a726ab3 (x_refsource_MISC)

Frequently asked questions

What is CVE-2023-23931?: CVE-2023-23931 is a medium-severity vulnerability in Pyca 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.