There is an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH1024 are considered just feasible, because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be significant. However, for an attack on TLS to be meaningful, the server would have to share the DH1024 private key among multiple clients, which is no longer an option since CVE-2016-0701. This only affects processors that support the AVX2 but not ADX extensions like Intel Haswell (4th generation). Note: The impact from this issue is similar to CVE-2017-3736, CVE-2017-3732 and CVE-2015-3193. External References: https://www.openssl.org/news/secadv/20171207.txt
Created mingw-openssl tracking bugs for this issue: Affects: epel-7 [bug 1523513] Affects: fedora-all [bug 1523511] Created openssl tracking bugs for this issue: Affects: fedora-all [bug 1523512]
Upstream commit: https://github.com/openssl/openssl/commit/5630661aecbea5fe3c4740f5fea744a1f07a6253
Any ETA for release of fix for openssl ?
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2018:0998 https://access.redhat.com/errata/RHSA-2018:0998
This issue has been addressed in the following products: Red Hat JBoss Core Services Via RHSA-2018:2187 https://access.redhat.com/errata/RHSA-2018:2187
This issue has been addressed in the following products: JBoss Core Services on RHEL 6 Via RHSA-2018:2186 https://access.redhat.com/errata/RHSA-2018:2186
This issue has been addressed in the following products: JBoss Core Services on RHEL 7 Via RHSA-2018:2185 https://access.redhat.com/errata/RHSA-2018:2185
This vulnerability is out of security support scope for the following product: * Red Hat Enterprise Application Platform 5 Please refer to https://access.redhat.com/support/policy/updates/jboss_notes for more details.