CVE-2020-15522
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…
Does this matter?
Lower severity and a low EPSS score (1.52%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.52% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- bouncycastle/bc-csharp · bouncycastle/bouncy castle fips .net api · bouncycastle/fips java api · bouncycastle/the bouncy castle crypto package for java
- Source
- cve@mitre.org
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.