The Traffic Router component of the incubating Apache Traffic Control project is vulnerable to a Slowloris style Denial of Service attack. TCP connections made on the configured DNS port will remain in the ESTABLISHED
state until the client explicitly closes the connection or Traffic Router is restarted. If connections remain in the ESTABLISHED
state indefinitely and accumulate in number to match the size of the thread pool dedicated to processing DNS requests, the thread pool becomes exhausted. Once the thread pool is exhausted, Traffic Router is unable to service any DNS request, regardless of transport protocol.
github.com/apache/trafficcontrol
github.com/apache/trafficcontrol/commit/738c10fa1b5861e4cc3944dc7c3065d16f4a708c
github.com/apache/trafficcontrol/pull/633
github.com/apache/trafficcontrol/pull/634
lists.apache.org/thread.html/42b207e9f526353b504591684bd02a5e9fcb4b8f28534253d07740a0@%3Cusers.trafficcontrol.apache.org%3E
lists.apache.org/thread.html/bb09fc29e9c2ee85b118a3d5748a8a523d30cf691ff8b606c6a1748c@%3Ccommits.trafficcontrol.apache.org%3E
lists.apache.org/thread.html/r3c675031ac220b5eae64a9c84a03ee60045c6045738607dca4a96cb8@%3Ccommits.trafficcontrol.apache.org%3E
nvd.nist.gov/vuln/detail/CVE-2017-7670