CVE-2020-36242critical
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.
References
https://github.com/pyca/cryptography/issues/5615
https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst
https://github.com/pyca/cryptography/compare/3.3.1...3.3.2
Details
Source: MITRE
Published: 2021-02-07
Updated: 2022-07-25
Type: CWE-787
Risk Information
CVSS v2
Base Score: 6.4
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:P
Impact Score: 4.9
Exploitability Score: 10
Severity: MEDIUM
CVSS v3
Base Score: 9.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Impact Score: 5.2
Exploitability Score: 3.9
Severity: CRITICAL