Covert Timing Channel

Affecting python-cryptography package, versions *

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Overview

Affected versions of this package are vulnerable to Covert Timing Channel python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via timed processing of valid PKCS#1 v1.5 ciphertext.

Remediation

There is no fixed version for python-cryptography.

References

CVSS Score

5.9
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    None
  • Availability
    None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVE
CVE-2020-25659
CWE
CWE-385
Snyk ID
SNYK-DEBIAN10-PYTHONCRYPTOGRAPHY-1022252
Disclosed
11 Jan, 2021
Published
27 Oct, 2020