PT-2020-6703

CVE-2020-25659

·

Published

2020-10-25

·

Updated

2026-08-06

Description by

CVSS 4.0
8.2
High
MetricsAV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Name of the Vulnerable Software and Affected Versions python-cryptography versions 3.2
Description The issue is related to errors in RSA key management in the python-cryptography package for the Python programming language. It may allow a remote attacker to gain unauthorized access to protected information. The vulnerability is specifically related to Bleichenbacher timing attacks in the RSA decryption API, which can be exploited through timed processing of valid PKCS#1 v1.5 ciphertext. This could impact users of RSA decryption in online scenarios.
Recommendations For python-cryptography version 3.2, update to a version where the RSA decryption vulnerability is fixed, as the current version is vulnerable to Bleichenbacher timing attacks. As a temporary workaround, consider restricting the use of the RSA decryption API to minimize the risk of exploitation.
Exploitability
Fix
Impacts
Vendors
Affected products
Weakness enumeration
Related identifiers
GHSA-HGGM-JPG3-V476
ALT-PU-2020-3147
ALT-PU-2023-8071
ALT-PU-2024-9926
CESA-2021_1608
MGASA-2020-0438
OPENSUSE-SU-2020:2173-1
OPENSUSE-SU-2020_2173-1
OPENSUSE-SU-2024:11223-1
OPENSUSE-SU-2024:13819-1
OPENSUSE-SU-2026:11468-1
PYSEC-2021-62
RHSA-2021:1608
RHSA-2021_1608
RHSA-2021:2239
RHSA-2021:3254
RLSA-2021:1608
SUSE-FU-2022:0444-1
SUSE-FU-2022:0445-1
SUSE-RU-2021:0985-1
SUSE-RU-2022:2355-1
SUSE-SU-2020:3592-1
SUSE-SU-2020_3592-1
SUSE-SU-2020:3629-1
SUSE-SU-2020_3629-1
SUSE-SU-2023:0604-1
SUSE-SU-2023_0604-1
SUSE-SU-2023:2783-1
SUSE-SU-2023:2783-2
USN-4613-1
Found an issue in the description? Have something to add? Feel free to write us 👾