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.
Metrics
CVSS 3.1 5.9/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522Third Party Advisory
- https://github.com/bcgit/bc-java/wiki/CVE-2020-15522Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210622-0007/
- https://www.bouncycastle.org/releasenotes.htmlRelease Notes, Vendor Advisory
- https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522Third Party Advisory
- https://github.com/bcgit/bc-java/wiki/CVE-2020-15522Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210622-0007/
- https://www.bouncycastle.org/releasenotes.htmlRelease Notes, Vendor Advisory
Timeline
- Published
- May 20, 2021
- Last modified
- Jun 17, 2026
- NVD status
- Modified