View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2017-9804 medium priority: Ubuntu including 1 source packages (libstruts1.2-java), 8 status rows across 8 suites (artful, bionic, cosmic, disco, trusty, upstream, xenial, zesty): DNE 7, needed 1.
In Apache Struts 2.3.7 through 2.3.33 and 2.5 through 2.5.12, if an application allows entering a 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. NOTE: this vulnerability exists because of an incomplete fix for S2-047 / CVE-2017-7672.