RESTEasy 2.3.1 before 2.3.8.SP2 and 3.x before 3.0.9, as used in Red Hat JBoss Enterprise Application Platform (EAP) 6.3.0, does not disable external entities when the resteasy.document.expand.entity.references parameter is set to false, which allows remote attackers to read arbitrary files and have other unspecified impact via unspecified vectors, related to an XML External Entity (XXE) issue. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-0818.
rhn.redhat.com/errata/RHSA-2014-1011.html
rhn.redhat.com/errata/RHSA-2014-1039.html
rhn.redhat.com/errata/RHSA-2014-1040.html
rhn.redhat.com/errata/RHSA-2014-1298.html
rhn.redhat.com/errata/RHSA-2015-0125.html
rhn.redhat.com/errata/RHSA-2015-0675.html
rhn.redhat.com/errata/RHSA-2015-0720.html
rhn.redhat.com/errata/RHSA-2015-0765.html
secunia.com/advisories/60019
www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
www.securityfocus.com/bid/69058
github.com/resteasy/Resteasy/pull/521
github.com/resteasy/Resteasy/pull/533
github.com/ronsigal/Resteasy/commit/9b7d0f574cafdcf3bea5428f3145ab4908fc6d83