CVE-2020-25659
python-cryptography
MEDIUM 5.9
At a glance
- Source
- NVD
- EPSS
- EPSS 2.46 % · percentile 84 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-385 — Covert Timing Channel
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-hggm-jpg3-v476 — RSA decryption vulnerable to Bleichenbacher timing vulnerability
- PYSEC-2021-62 — 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.
European references
- ENISA EUVD · EUVD-2021-0047
- GCVE · GCVE-0-2020-25659
CERT-FR advisories
- CERTFR-2025-AVI-0309 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0135 — Multiples vulnérabilités dans IBM QRadar Deployment Intelligence App · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0958 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0297 — Multiples vulnérabilités dans Juniper · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0262 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2021-AVI-820 — Multiples vulnérabilités dans Juniper Junos OS et Junos OS Evolved · cert.ssi.gouv.fr
- CERTFR-2021-AVI-505 — Multiples vulnérabilités dans IBM Spectrum · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:cryptography.io:cryptography:3.2:*:*:*:*:python:*:*cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| python-cryptography | affected python-cryptography 3.2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |