Covert Timing Channel Affecting rh-python38-python-test package, versions <0:3.8.11-2.el7


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.15% (53rd percentile)

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  • Snyk IDSNYK-RHEL7-RHPYTHON38PYTHONTEST-4850590
  • published26 Jul 2021
  • disclosed25 Oct 2020

Introduced: 25 Oct 2020

CVE-2020-25659  (opens in a new tab)
CWE-385  (opens in a new tab)

How to fix?

Upgrade RHEL:7 rh-python38-python-test to version 0:3.8.11-2.el7 or higher.
This issue was patched in RHSA-2021:3254.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rh-python38-python-test package and not the rh-python38-python-test package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1