GHSA-6xx3-rg99-gc3pMediumCVSS 5.1

Timing based private key exposure in Bouncy Castle

Published
August 13, 2021
Last Modified
July 17, 2025

🔗 CVE IDs covered (1)

📋 Description

Bouncy Castle BC Java before 1.66, BC C# .NET before 1.8.7, BC-FJA before 1.0.2.1, BC before 1.66, 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 products9

  • maven/org.bouncycastle:bc-fips:<= 1.0.2
  • maven/org.bouncycastle:bcprov-ext-jdk15on:< 1.66
  • maven/org.bouncycastle:bcprov-ext-jdk16:< 1.66
  • maven/org.bouncycastle:bcprov-jdk14:< 1.66
  • maven/org.bouncycastle:bcprov-jdk15:< 1.66
  • maven/org.bouncycastle:bcprov-jdk15on:< 1.66
  • maven/org.bouncycastle:bcprov-jdk15to18:< 1.66
  • maven/org.bouncycastle:bcprov-jdk16:< 1.66
  • nuget/BouncyCastle:< 1.8.7

🔗 References (6)