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.
References (4)
Core 4
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://www.bouncycastle.org/releasenotes.html
Third Party Advisory x_refsource_misc
https://github.com/bcgit/bc-java/wiki/CVE-2020-15522
Third Party Advisory x_refsource_misc
https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522
Vendor Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210622-0007/
Scores
CVSS v3
5.9
EPSS
0.0041
EPSS Percentile
61.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-362
Status
published
Products (13)
bouncycastle/bc-csharp
< 1.8.7
bouncycastle/bouncy_castle_fips_.net_api
< 1.0.1.1
bouncycastle/fips_java_api
< 1.0.1.2
bouncycastle/the_bouncy_castle_crypto_package_for_java
< 1.66
nuget/BouncyCastle
0 - 1.8.7NuGet
org.bouncycastle/bc-fips
0 - 1.0.2.1Maven
org.bouncycastle/bcprov-ext-jdk15on
0 - 1.66Maven
org.bouncycastle/bcprov-ext-jdk16
0 - 1.66Maven
org.bouncycastle/bcprov-jdk14
0 - 1.66Maven
org.bouncycastle/bcprov-jdk15
0 - 1.66Maven
... and 3 more
Published
May 20, 2021
Tracked Since
Feb 18, 2026