TLS Padding Oracle Affecting com.madgag.spongycastle:bctls-jdk15on package, versions [,1.59)


0.0
medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High
Expand this section
NVD
5.9 medium

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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.