Vulnerability in the Java SE, Java SE Embedded, JRockit component of Oracle
Java SE (subcomponent: JCE). Supported versions that are affected are Java
SE: 6u171, 7u161, 8u152 and 9.0.1; Java SE Embedded: 8u151; JRockit:
R28.3.16. Difficult to exploit vulnerability allows unauthenticated
attacker with network access via multiple protocols to compromise Java SE,
Java SE Embedded, JRockit. Successful attacks of this vulnerability can
result in unauthorized access to critical data or complete access to all
Java SE, Java SE Embedded, JRockit accessible data. Note: This
vulnerability applies to client and server deployment of Java. This
vulnerability can be exploited through sandboxed Java Web Start
applications and sandboxed Java applets. It can also be exploited by
supplying data to APIs in the specified Component without using sandboxed
Java Web Start applications or sandboxed Java applets, such as through a
web service. CVSS 3.0 Base Score 5.9 (Confidentiality impacts). CVSS
Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).

It was discovered that the Java Cryptography Extension (JCE)
implementation in OpenJDK in some situations did guarantee sufficient
strength of keys during key agreement. An attacker could use this
to expose sensitive information.

sbeattie

see release notes regarding JDK-8185292 if javax.crypto.KeyAgreement's generateSecret(String) method is failing.