Description
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.
Published: 2021-01-11
Score: 5.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-0047 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.
Github GHSA Github GHSA GHSA-hggm-jpg3-v476 RSA decryption vulnerable to Bleichenbacher timing vulnerability
Ubuntu USN Ubuntu USN USN-4613-1 python-cryptography vulnerability
History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00343}

epss

{'score': 0.00252}


Mon, 09 Sep 2024 14:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:cryptography.io:cryptography:3.2:*:*:*:*:*:*:* cpe:2.3:a:cryptography.io:cryptography:3.2:*:*:*:*:python:*:*

Thu, 05 Sep 2024 16:30:00 +0000

Type Values Removed Values Added
First Time appeared Cryptography.io
Cryptography.io cryptography
CPEs cpe:2.3:a:python-cryptography_project:python-cryptography:3.2:*:*:*:*:*:*:* cpe:2.3:a:cryptography.io:cryptography:3.2:*:*:*:*:*:*:*
Vendors & Products Python-cryptography Project
Python-cryptography Project python-cryptography
Cryptography.io
Cryptography.io cryptography

Subscriptions

Cryptography.io Cryptography
Oracle Communications Cloud Native Core Network Function Cloud Native Environment
Redhat Enterprise Linux Rhel Software Collections Rhev Hypervisor
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-04T15:40:36.578Z

Reserved: 2020-09-16T00:00:00.000Z

Link: CVE-2020-25659

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-01-11T16:15:15.040

Modified: 2024-11-21T05:18:22.730

Link: CVE-2020-25659

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-10-25T00:00:00Z

Links: CVE-2020-25659 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses