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CVE-2023-23931

4.8 · MEDIUM

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.

Published Feb 7, 2023CWE-754EPSS 1.30%

Overview

CVE-2023-23931 is a medium-severity vulnerability. It was published on February 7, 2023 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/pyca/cryptography/pull/8230/commits/94a50a9731f35405f0357fa5f3b177d46a726ab3GitHubgithub.com/pyca/cryptography/security/advisories/GHSA-w7pp-m8wf-vj6rGitHubgithub.com/pyca/cryptography/pull/8230/commits/94a50a9731f35405f0357fa5f3b177d46a726ab3GitHubgithub.com/pyca/cryptography/security/advisories/GHSA-w7pp-m8wf-vj6rReflists.debian.org/debian-lts-announce/2024/10/msg00012.htmlRefsecurity.netapp.com/advisory/ntap-20230324-0007/

How CyberStrike helps

Frequently asked questions

What is CVE-2023-23931?

CVE-2023-23931 is a medium-severity vulnerability. It was published on February 7, 2023 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

How severe is CVE-2023-23931?

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-23931?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-23931?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-23931 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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