Can anyone inform me as to whether or not Java on CentOS-6.6 still has SSLv3 enabled? And if it does then how is it disabled?
On Wed, Mar 11, 2015 at 10:03 AM, James B. Byrne byrnejb@harte-lyne.ca wrote:
Can anyone inform me as to whether or not Java on CentOS-6.6 still has SSLv3 enabled? And if it does then how is it disabled?
James:
Check the java.security file for your JRE. I'm running OpenJDK 8 on Cent 6.6 and it's located at /usr/lib/jvm/jre/lib/security/java.security. I haven't made any changes to the java.security file, which shows SSLv3 is already disabled: jdk.tls.disabledAlgorithms=SSLv3
Grant
On Wed, Mar 11, 2015 at 1:03 PM, James B. Byrne byrnejb@harte-lyne.ca wrote:
Can anyone inform me as to whether or not Java on CentOS-6.6 still has SSLv3 enabled? And if it does then how is it disabled?
If you're using Oracle JRE / JDK previous to 8u31 here are instructions on how to disable SSLv3 http://www.oracle.com/technetwork/java/javase/documentation/cve-2014-3566-23... (the latest is Java8 version from Oracle is 8u40 and that DOES have sslv3 disabled by default)
Here, instructions on how to install Oracle Java8u40 on CentOS http://tecadmin.net/install-java-8-on-centos-rhel-and-fedora/
But, if you're using the OpenJDK included in CentOS 6.6, it can be OpenJDK 7 or OpenJDK 8, which was included AFAIK as a technology preview, not the default.
Here's more info on how to get OpenJDK8 in CentOS 6.6 if you don't have it already http://www.2daygeek.com/openjdk-8-installation-centos-fedora/
...then get the latest update from the repo which is 8.0u31 aka 1.8.0.31 dated 21-Jan-2015 http://mirrors.syringanetworks.net/centos/6.6/updates/x86_64/Packages/java-1...
OpenJDK 8.0u31 disables SSLv3 by default, according to this http://support.blancco.com/index.php?/News/NewsItem/View/73/important-notifi...
YMMV Hope this helps! FC
On Wed, Mar 11, 2015 at 12:03:01PM -0400, James B. Byrne wrote:
Can anyone inform me as to whether or not Java on CentOS-6.6 still has SSLv3 enabled? And if it does then how is it disabled?
According to these updates for openjdk java:
java-1.6.0-openjdk https://rhn.redhat.com/errata/RHSA-2015-0085.html
java-1.7.0-openjdk https://rhn.redhat.com/errata/RHSA-2015-0067.html
java-1.8.0-openjdk https://rhn.redhat.com/errata/RHSA-2015-0069.html
"Note: This update disables SSL 3.0 by default to address this issue. The jdk.tls.disabledAlgorithms security property can be used to re-enable SSL 3.0 support if needed. For additional information, refer to the Red Hat Bugzilla bug linked to in the References section."
All these announcements were posted to the enterprise-watch-list mailing list: https://www.redhat.com/mailman/listinfo/enterprise-watch-list
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Fernando Cassia -
Grant McChesney -
James B. Byrne -
Jonathan Billings