CVSS: 5.9EPSS: 0%CPEs: 5EXPL: 0CVE-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 •
CVSS: 5.3EPSS: 0%CPEs: 2EXPL: 0CVE-2020-26939
https://notcve.org/view.php?id=CVE-2020-26939
In Legion of the Bouncy Castle BC before 1.61 and BC-FJA before 1.0.1.2, attackers can obtain sensitive information about a private exponent because of Observable Differences in Behavior to Error Inputs. This occurs in org.bouncycastle.crypto.encodings.OAEPEncoding. Sending invalid ciphertext that decrypts to a short payload in the OAEP Decoder could result in the throwing of an early exception, potentially leaking some information about the private exponent of the RSA private key performing the encryption. En Legion of the Bouncy Castle BC versiones anteriores a 1.61 y BC-FJA versiones anteriores a 1.0.1.2, los atacantes pueden obtener información confidencial sobre un exponente privado debido a las diferencias observables en el comportamiento de las entradas de error. Esto se presenta en org.bouncycastle.crypto.encodings.OAEPEncoding. • https://github.com/bcgit/bc-java/wiki/CVE-2020-26939 https://lists.apache.org/thread.html/r8c36ba34e80e05eecb1f80071cc834d705616f315b634ec0c7d8f42e%40%3Cissues.solr.apache.org%3E • CWE-203: Observable Discrepancy •