CVE-2020-15522 – bouncycastle: Timing issue within the EC math library

https://notcve.org/view.php?id=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 timing information for the generation of multiple deterministic ECDSA signatures. Bouncy Castle BC Java versiones anteriores a 1.66, BC C # .NET versiones anteriores a 1.8.7, BC-FJA versiones anteriores a 1.0.1.2, 1.0.2.1 y BC-FNA versiones anteriores a 1.0.1.1, presentan un problema de sincronización dentro de la biblioteca EC math que puede exponer información sobre la clave privada cuando un atacante es capaz de observar información de sincronización para la generación de múltiples firmas ECDSA deterministas A flaw was found in bouncycastle. A timing issue within the EC math library can expose information about the private key when an attacker is able to observe timing information for the generation of multiple deterministic ECDSA signatures. • https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522 https://github.com/bcgit/bc-java/wiki/CVE-2020-15522 https://security.netapp.com/advisory/ntap-20210622-0007 https://www.bouncycastle.org/releasenotes.html https://access.redhat.com/security/cve/CVE-2020-15522 https://bugzilla.redhat.com/show_bug.cgi?id=1962879 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition •