CVE-2023-23931
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.
Does this matter?
Lower severity and a low EPSS score (1.30%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- EPSS
- 1.30% probability · 69th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-754
- Affected
- cryptography.io/cryptography
- Source
- security-advisories@github.com
References
- https://github.com/pyca/cryptography/pull/8230/commits/94a50a9731f35405f0357fa5f3b177d46a726ab3Patch
- https://github.com/pyca/cryptography/security/advisories/GHSA-w7pp-m8wf-vj6rExploit, Vendor Advisory
- https://github.com/pyca/cryptography/pull/8230/commits/94a50a9731f35405f0357fa5f3b177d46a726ab3Patch
- https://github.com/pyca/cryptography/security/advisories/GHSA-w7pp-m8wf-vj6rExploit, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/10/msg00012.html
- https://security.netapp.com/advisory/ntap-20230324-0007/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.