CVE-2023-23931: Cipher.update_into can corrupt memory if passed an immutable python object as the outbuf
CVE-2023-23931 · Severity: low · CVSS 3.1 · Published 2023-02-07
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.
Yes. cryptography (PyPI): upgrade to 39.0.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
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