CVE-2020-25659

Published: 28 October 2020

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.

Priority

Medium

CVSS 3 base score: 5.9

Status

Package Release Status
python-cryptography
Launchpad, Ubuntu, Debian
Upstream
Released (3.2.1-1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (2.8-3ubuntu0.1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (2.1.4-1ubuntu1.4)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (1.2.3-1ubuntu0.3)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Patches:
Upstream: https://github.com/pyca/cryptography/commit/58494b41d6ecb0f56b7c5f05d5f5e3ca0320d494 (3.2)