Apache CXF supports sending and receiving attachments via either the JAX-WS or JAX-RS specifications. It is possible to craft a message attachment header that could lead to a Denial of Service (DoS) attack on a CXF web service provider. Both JAX-WS and JAX-RS services are vulnerable to this attack. From Apache CXF 3.2.1 and 3.1.14, message attachment headers that are greater than 300 characters will be rejected by default. This value is configurable via the property "attachment-max-header-size".
https://access.redhat.com/errata/RHSA-2018:2428
https://access.redhat.com/errata/RHSA-2018:2425
https://access.redhat.com/errata/RHSA-2018:2424
https://access.redhat.com/errata/RHSA-2018:2423
http://www.securitytracker.com/id/1040486
http://www.securityfocus.com/bid/101859
http://cxf.apache.org/security-advisories.data/CVE-2017-12624.txt.asc