9.1

CVE-2020-36242

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cryptography.Io ≫ Cryptography SwPlatformpython Version < 3.3.2
Fedoraproject ≫ Fedora Version33
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 6.72% 0.931
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 9.1 3.9 5.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
nvd@nist.gov 6.4 10 4.9
AV:N/AC:L/Au:N/C:P/I:N/A:P
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://www.oracle.com/security-alerts/cpuapr2022.html
Patch
Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html
Patch
Third Party Advisory
https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst
Third Party Advisory
Release Notes
https://github.com/pyca/cryptography/compare/3.3.1...3.3.2
Patch
Third Party Advisory
https://github.com/pyca/cryptography/issues/5615
Patch
Third Party Advisory
Exploit
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7RGQLK4J5ZQFRLKCHVVG6BKZTUQMG7E/