CVE-2020-15522: Timing based private key exposure in Bouncy Castle

CVE-2020-15522 · Severity: low · CVSS 3.1 · Published 2021-08-13

Timing based private key exposure in Bouncy Castle

Technologies: org.bouncycastle:bc-fips (Maven), org.bouncycastle:bcprov-ext-jdk15on (Maven), org.bouncycastle:bcprov-ext-jdk16 (Maven), org.bouncycastle:bcprov-jdk14 (Maven), org.bouncycastle:bcprov-jdk15 (Maven), org.bouncycastle:bcprov-jdk15on (Maven), org.bouncycastle:bcprov-jdk15to18 (Maven), org.bouncycastle:bcprov-jdk16 (Maven), BouncyCastle (NuGet). Vendors: Maven, NuGet.

Quick answers

Is CVE-2020-15522 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2020-15522 being exploited in the wild.
How severe is CVE-2020-15522?
Low severity, with a CVSS score of 3.1, published 13 August 2021.
Which products and versions are affected?
org.bouncycastle:bc-fips (Maven) ECOSYSTEM:introduced=0,fixed=1.0.2.1; org.bouncycastle:bcprov-ext-jdk15on (Maven) ECOSYSTEM:introduced=0,fixed=1.66; org.bouncycastle:bcprov-ext-jdk16 (Maven) ECOSYSTEM:introduced=0,fixed=1.66; org.bouncycastle:bcprov-jdk14 (Maven) ECOSYSTEM:introduced=0,fixed=1.66; and 5 more.
Is there a fix for CVE-2020-15522?
Yes. org.bouncycastle:bc-fips (Maven): upgrade to 1.0.2.1 or later; org.bouncycastle:bcprov-ext-jdk15on (Maven): upgrade to 1.66 or later; org.bouncycastle:bcprov-ext-jdk16 (Maven): upgrade to 1.66 or later; org.bouncycastle:bcprov-jdk14 (Maven): upgrade to 1.66 or later; org.bouncycastle:bcprov-jdk15 (Maven): upgrade to 1.66 or later; org.bouncycastle:bcprov-jdk15on (Maven): upgrade to 1.66 or later; org.bouncycastle:bcprov-jdk15to18 (Maven): upgrade to 1.66 or later; org.bouncycastle:bcprov-jdk16 (Maven): upgrade to 1.66 or later; BouncyCastle (NuGet): upgrade to 1.8.7 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2020-15522?
Check whether you run org.bouncycastle:bc-fips (Maven), org.bouncycastle:bcprov-ext-jdk15on (Maven), org.bouncycastle:bcprov-ext-jdk16 (Maven) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • org.bouncycastle:bc-fips (Maven): upgrade to 1.0.2.1 or later
    # set org.bouncycastle:bc-fips to 1.0.2.1 in your pom.xml or build.gradle
  • org.bouncycastle:bcprov-ext-jdk15on (Maven): upgrade to 1.66 or later
    # set org.bouncycastle:bcprov-ext-jdk15on to 1.66 in your pom.xml or build.gradle
  • org.bouncycastle:bcprov-ext-jdk16 (Maven): upgrade to 1.66 or later
    # set org.bouncycastle:bcprov-ext-jdk16 to 1.66 in your pom.xml or build.gradle
  • org.bouncycastle:bcprov-jdk14 (Maven): upgrade to 1.66 or later
    # set org.bouncycastle:bcprov-jdk14 to 1.66 in your pom.xml or build.gradle
  • org.bouncycastle:bcprov-jdk15 (Maven): upgrade to 1.66 or later
    # set org.bouncycastle:bcprov-jdk15 to 1.66 in your pom.xml or build.gradle
  • org.bouncycastle:bcprov-jdk15on (Maven): upgrade to 1.66 or later
    # set org.bouncycastle:bcprov-jdk15on to 1.66 in your pom.xml or build.gradle
  • org.bouncycastle:bcprov-jdk15to18 (Maven): upgrade to 1.66 or later
    # set org.bouncycastle:bcprov-jdk15to18 to 1.66 in your pom.xml or build.gradle
  • org.bouncycastle:bcprov-jdk16 (Maven): upgrade to 1.66 or later
    # set org.bouncycastle:bcprov-jdk16 to 1.66 in your pom.xml or build.gradle
  • BouncyCastle (NuGet): upgrade to 1.8.7 or later
    dotnet add package BouncyCastle --version 1.8.7

Affected products

  • org.bouncycastle:bc-fips (Maven) ECOSYSTEM:introduced=0,fixed=1.0.2.1
  • org.bouncycastle:bcprov-ext-jdk15on (Maven) ECOSYSTEM:introduced=0,fixed=1.66
  • org.bouncycastle:bcprov-ext-jdk16 (Maven) ECOSYSTEM:introduced=0,fixed=1.66
  • org.bouncycastle:bcprov-jdk14 (Maven) ECOSYSTEM:introduced=0,fixed=1.66
  • org.bouncycastle:bcprov-jdk15 (Maven) ECOSYSTEM:introduced=0,fixed=1.66
  • org.bouncycastle:bcprov-jdk15on (Maven) ECOSYSTEM:introduced=0,fixed=1.66
  • org.bouncycastle:bcprov-jdk15to18 (Maven) ECOSYSTEM:introduced=0,fixed=1.66
  • org.bouncycastle:bcprov-jdk16 (Maven) ECOSYSTEM:introduced=0,fixed=1.66
  • BouncyCastle (NuGet) ECOSYSTEM:introduced=0,fixed=1.8.7

Identifiers

  • CVE-2020-15522
  • GHSA-6xx3-rg99-gc3p

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