CVE-2020-15522
At a glance
- Source
- NVD
- EPSS
- EPSS 1.52 % · percentile 75 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mitre
- NVD status
- Modified
Description
Bouncy Castle BC Java before 1.66, BC C# .NET before 1.8.7, BC-FJA before 1.0.1.2, 1.0.2.1, and BC-FNA before 1.0.1.1 have a timing issue within the EC math library that can expose information about the private key when an attacker is able to observe timing information for the generation of multiple deterministic ECDSA signatures.
Weaknesses (CWE)
- CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization
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-6xx3-rg99-gc3p — Timing based private key exposure in Bouncy Castle
European references
- ENISA EUVD · EUVD-2021-1608
- GCVE · GCVE-0-2020-15522
CERT-FR advisories
- CERTFR-2026-AVI-1336 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0556 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2022-AVI-952 — Multiples vulnérabilités dans IBM QRadar · cert.ssi.gouv.fr
- CERTFR-2021-AVI-951 — Multiples vulnérabilités dans le noyau Linux de RedHat · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:bouncycastle:bc-csharp:*:*:*:*:*:*:*:*< 1.8.7cpe:2.3:a:bouncycastle:bouncy_castle_fips_.net_api:*:*:*:*:*:*:*:*< 1.0.1.1cpe:2.3:a:bouncycastle:fips_java_api:*:*:*:*:*:*:*:*< 1.0.1.2cpe:2.3:a:bouncycastle:fips_java_api:*:*:*:*:*:*:*:*≥ 1.0.2 < 1.0.2.1cpe:2.3:a:bouncycastle:the_bouncy_castle_crypto_package_for_java:*:*:*:*:*:*:*:*< 1.66
Affected products
| Product | Versions |
|---|---|
| affected n/a |
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 |