That says they used a vulnerability in a "Juniper device"; probably a router/firewall appliance. There have been quite a few vulnerabilities[1] in their Junos line[2], but any or all of these ones seems likely[3]
[1] http://www.cvedetails.com/vulnerability-list/vendor_id-874/y...
[2] https://en.wikipedia.org/wiki/Junos
[3] http://www.cvedetails.com/cve/CVE-2014-3816/
http://www.cvedetails.com/cve/CVE-2014-3412/