TLS Padding Oracle Affecting com.madgag.spongycastle:bctls-jdk15on Open this link in a new tab package, versions [,1.59)


0.0
medium
  • Attack Complexity

    High

  • Confidentiality

    High

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  • snyk-id

    SNYK-JAVA-COMMADGAGSPONGYCASTLE-32032

  • published

    3 Jan 2018

  • disclosed

    8 Dec 2017

  • credit

    Hanno Böck, Juraj Somorovsky, Craig Young

How to fix?

Upgrade org.bouncycastle:bctls-jdk15on to version 1.59 or higher.

Overview

org.bouncycastle:bctls-jdk15on

BouncyCastle TLS prior to version 1.0.3, when configured to use the JCE (Java Cryptography Extension) for cryptographic functions, provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated. An attacker can recover the private key from a vulnerable application. This vulnerability is referred to as ROBOT.