Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: 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.
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | python-cryptography-debugsource | 0:36.0.1-1.amzn2023.0.4 |
| Amazon Linux · 2023 | python3-cryptography | 0:36.0.1-1.amzn2023.0.4 |
| Amazon Linux · 2023 | python3-cryptography-debuginfo | 0:36.0.1-1.amzn2023.0.4 |
Vulnerabilities 1
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Medium 4.8
Cipher.update_into can corrupt memory in pyca cryptography
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 a…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2023-23931.html