If an application allows enter an URL in a form field and built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when performing validation of the URL. Solution is to upgrade to Apache Struts version 2.5.12.
[
{
"product": "Apache Struts",
"vendor": "Apache Software Foundation",
"versions": [
{
"status": "affected",
"version": "2.5 to 2.5.10.1"
}
]
}
]
struts.apache.org/docs/s2-047.html
www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html
www.securityfocus.com/bid/99563
www.securitytracker.com/id/1039114
lists.apache.org/thread.html/3795c4dd46d9ec75f4a6eb9eca11c11edd3e796c6c1fd7b17b5dc50d%40%3Cannouncements.struts.apache.org%3E
security.netapp.com/advisory/ntap-20180706-0002/