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-2016-10197 low priority: Ubuntu including 3 source packages (firefox, libevent, thunderbird), 17 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): released 15, ignored 1, needs-triage 1.
The search_make_new function in evdns.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (out-of-bounds read) via an empty hostname.