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.
CVE-2023-23931 - Medium Severity Vulnerability
cryptography is a package which provides cryptographic recipes and primitives to Python developers.
Library home page: https://files.pythonhosted.org/packages/6d/f1/c69d53593eb92a5e5382fa2101cd9ae861936c6a428092605b4257336171/cryptography-2.9.1-cp35-abi3-manylinux2010_x86_64.whl
Path to dependency file: /server/requirements.txt
Path to vulnerable library: /server/requirements.txt
Dependency Hierarchy: - pyOpenSSL-19.1.0-py2.py3-none-any.whl (Root Library) - :x: **cryptography-2.9.1-cp35-abi3-manylinux2010_x86_64.whl** (Vulnerable Library)
Found in base branch: dev
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.
Publish Date: 2023-02-07
URL: CVE-2023-23931
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: Low - Availability Impact: Low
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://www.cve.org/CVERecord?id=CVE-2023-23931
Release Date: 2023-02-07
Fix Resolution (cryptography): 39.0.1
Direct dependency fix Resolution (pyOpenSSL): 20.0.0
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