Red Hat Bugzilla – Bug 1588695
CVE-2016-1000339 bouncycastle: Information leak in AESFastEngine class
Last modified: 2018-10-25 11:41:57 EDT
In the Bouncy Castle JCE Provider version 1.55 and earlier the primary engine class used for AES was AESFastEngine. Due to the highly table driven approach used in the algorithm it turns out that if the data channel on the CPU can be monitored the lookup table accesses are sufficient to leak information on the AES key being used. There was also a leak in AESEngine although it was substantially less. AESEngine has been modified to remove any signs of leakage (testing carried out on Intel X86-64) and is now the primary AES class for the BC JCE provider from 1.56. Use of AESFastEngine is now only recommended where otherwise deemed appropriate. Upstream patch: https://github.com/bcgit/bc-java/commit/8a73f08931450c17c749af067b6a8185abdfd2c0#diff-494fb066bed02aeb76b6c005632943f2 https://github.com/bcgit/bc-java/commit/413b42f4d770456508585c830cfcde95f9b0e93b#diff-54656f860db94b867ba7542430cd2ef0
Created bouncycastle tracking bugs for this issue: Affects: epel-all [bug 1588700] Affects: fedora-all [bug 1588702]
(In reply to Pedro Sampaio from comment #1) > Affects: fedora-all [bug 1588702] Fedora already carries bouncycastle newer than 1.56, so I will close this bug.
Statement: This issue affects the versions of bouncycastle as shipped with Red Hat Subscription Asset Manager 1.x. Red Hat Product Security has rated this issue as having a security impact of Moderate. No update is planned for this product at this time. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
This issue has been addressed in the following products: Red Hat JBoss Fuse Via RHSA-2018:2669 https://access.redhat.com/errata/RHSA-2018:2669
This issue has been addressed in the following products: Red Hat Satellite 6.4 for RHEL 7 Via RHSA-2018:2927 https://access.redhat.com/errata/RHSA-2018:2927