CRITICAL 9.1 PyPI
PyCA Cryptography symmetrically encrypting large values can lead to integer overflow
GHSA-rhm9-p9w5-fwm7 · CVE-2020-36242 · PYSEC-2021-63
Published · Modified
AI SAST
Find this class of vulnerability in your own code
Corgea's AI-native static analysis detects vulnerabilities like this one across your repositories, ranks them by exploitability, and returns review-ready fixes.
Description
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.
References
- WEB https://github.com/pyca/cryptography/security/advisories/GHSA-rhm9-p9w5-fwm7
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2020-36242
- WEB https://github.com/pyca/cryptography/issues/5615
- WEB https://github.com/pyca/cryptography/commit/82b6ce28389f0a317bc55ba2091a74b346db7cae
- ADVISORY https://github.com/advisories/GHSA-rhm9-p9w5-fwm7
- PACKAGE https://github.com/pyca/cryptography
- WEB https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst
- WEB https://github.com/pyca/cryptography/compare/3.3.1...3.3.2
- WEB https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2021-63.yaml
- WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7RGQLK4J5ZQFRLKCHVVG6BKZTUQMG7E
- WEB https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7RGQLK4J5ZQFRLKCHVVG6BKZTUQMG7E
- WEB https://www.oracle.com/security-alerts/cpuapr2022.html
- WEB https://www.oracle.com/security-alerts/cpujul2022.html
Ready to move
Start Securing
Free, no credit card | First findings in minutes