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CVE-2020-15522

nvd nist
Published: May 20, 2021Modified: Jul 17, 2025

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5.9
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitability: 2.2 / Impact: 3.6
Source: NVD

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.

Affected (5)

Bouncycastle
4 products
Bc Csharp
Bouncy Castle Fips .net Api
Fips Java Api
The Bouncy Castle Crypto Package For Java
Configuration A
5 vulnerable
Vulnerable SoftwareAffected Versions
Bc Csharp
Before 1.8.7
Bouncy Castle Fips .net Api
Before 1.0.1.1
Bouncycastle
Fips Java Api
Before 1.0.1.2
Fips Java Api
From 1.0.2 to 1.0.2.1
The Bouncy Castle Crypto Package For Java
Before 1.66

Related CWEs

CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

References (8)

Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Source: cve@mitre.org
Release NotesVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Release NotesVendor Advisory

Timeline

No history available yet.