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-2015-4047 medium priority: Ubuntu including 1 source packages (ipsec-tools), 7 status rows across 7 suites (precise, trusty, upstream, utopic, vivid, wily, xenial): released 3, ignored 2, not-affected 2.
racoon/gssapi.c in IPsec-Tools 0.8.2 allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon crash) via a series of crafted UDP requests.