Описание
PyCA Cryptography symmetrically encrypting large values can lead to integer overflow
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. When certain sequences of update() calls with large values (multiple GBs) for symetric encryption or decryption occur, it's possible for an integer overflow to happen, leading to mishandling of buffers. This is patched in version 3.3.2 and newer.
Ссылки
- https://github.com/pyca/cryptography/security/advisories/GHSA-rhm9-p9w5-fwm7
- https://nvd.nist.gov/vuln/detail/CVE-2020-36242
- https://github.com/pyca/cryptography/issues/5615
- https://github.com/pyca/cryptography/commit/82b6ce28389f0a317bc55ba2091a74b346db7cae
- https://github.com/advisories/GHSA-rhm9-p9w5-fwm7
- https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst
- https://github.com/pyca/cryptography/compare/3.3.1...3.3.2
- https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2021-63.yaml
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7RGQLK4J5ZQFRLKCHVVG6BKZTUQMG7E
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7RGQLK4J5ZQFRLKCHVVG6BKZTUQMG7E
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
Пакеты
cryptography
>= 3.1, < 3.3.2
3.3.2
EPSS
8.8 High
CVSS4
9.1 Critical
CVSS3
CVE ID
Дефекты
Связанные уязвимости
In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.
In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.
In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.
In the cryptography package before 3.3.2 for Python, certain sequences ...
EPSS
8.8 High
CVSS4
9.1 Critical
CVSS3