Java SE and Java SE Embedded are vulnerable to unauthenticated modification attacks. An unauthenticated attacker can exploit a flaw in the Security component of OpenJDK which does not allow users to restrict the set of algorithms allowed for Jar integrity verification allowing an attacker to modify content of the Jar file that use weak signing key or hash algorithm.
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access.redhat.com/errata/RHSA-2017:1118
access.redhat.com/errata/RHSA-2017:1119
access.redhat.com/errata/RHSA-2017:1204
access.redhat.com/errata/RHSA-2017:1220
access.redhat.com/errata/RHSA-2017:1221
access.redhat.com/errata/RHSA-2017:1222
access.redhat.com/errata/RHSA-2017:3453
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security.gentoo.org/glsa/201705-03
security.gentoo.org/glsa/201707-01