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Status published
Critical
CVE-2020-36242
In the cryptography package before 3.3.2 for Python, certain sequences...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/pyca/cryptography/issues/5615
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7RGQLK4J5ZQFRLKCHVVG6BKZTUQMG7E/
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://github.com/pyca/cryptography/compare/3.3.1...3.3.2
- https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst
- https://www.oracle.com/security-alerts/cpujul2022.html
More from cryptography.io
View All →Affected Vendor
cryptography.io
View all reports →Affected Software
cryptography, fedora, communications cloud native core network function cloud native environment
Vulnerable Versions:
0, 33, 1.10.0
Timeline
Official Publish:
February 7th, 2021
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.