The xmlParserHandlePEReference function in parser.c in libxml2 before 2.9.2, as used in Web Listener in Oracle HTTP Server in Oracle Fusion Middleware 11.1.1.7.0, 12.1.2.0, and 12.1.3.0 and other products, loads external parameter entities regardless of whether entity substitution or validation is enabled, which allows remote attackers to cause a denial of service (resource consumption) via a crafted XML document.
lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
lists.apple.com/archives/security-announce/2015/Aug/msg00002.html
lists.opensuse.org/opensuse-updates/2015-12/msg00120.html
rhn.redhat.com/errata/RHSA-2015-0749.html
www-01.ibm.com/support/docview.wss?uid=swg21678183
www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
www.securityfocus.com/bid/67233
xmlsoft.org/news.html
bugzilla.redhat.com/show_bug.cgi?id=1090976
exchange.xforce.ibmcloud.com/vulnerabilities/93092
git.gnome.org/browse/libxml2/commit/?id=9cd1c3cfbd32655d60572c0a413e017260c854df
support.apple.com/kb/HT205030
support.apple.com/kb/HT205031