Integer Overflow or Wraparound

Affecting python-cryptography package, versions *

Report new vulnerabilities
Do your applications use this vulnerable package? Test your applications

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. 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.

Remediation

There is no fixed version for python-cryptography.

References

CVSS Score

9.1
high severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    None
  • Availability
    High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVE
CVE-2020-36242
CWE
CWE-120 CWE-190
Snyk ID
SNYK-DEBIAN10-PYTHONCRYPTOGRAPHY-1070576
Disclosed
07 Feb, 2021
Published
08 Feb, 2021