The URLValidator class in Apache Struts 2 2.3.20 through 2.3.28.1 and 2.5.x before 2.5.1 allows remote attackers to cause a denial of service via a null value for a URL field.
References
- https://nvd.nist.gov/vuln/detail/CVE-2016-4465
- https://bugzilla.redhat.com/show_bug.cgi?id=1348253
- https://struts.apache.org/docs/s2-041.html
- http://jvn.jp/en/jp/JVN12352818/index.html
- http://jvndb.jvn.jp/jvndb/JVNDB-2016-000114
- http://www-01.ibm.com/support/docview.wss?uid=swg21987854
- https://github.com/advisories/GHSA-xg75-68×3-7p3q