{"cve":"CVE-2017-7670","nvd":{"published":"2017-07-10T18:29:00.253","modified":"2026-06-17T01:24:56.580","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"references":["https://lists.apache.org/thread.html/42b207e9f526353b504591684bd02a5e9fcb4b8f28534253d07740a0%40%3Cusers.trafficcontrol.apache.org%3E","https://lists.apache.org/thread.html/bb09fc29e9c2ee85b118a3d5748a8a523d30cf691ff8b606c6a1748c%40%3Ccommits.trafficcontrol.apache.org%3E","https://lists.apache.org/thread.html/r3c675031ac220b5eae64a9c84a03ee60045c6045738607dca4a96cb8%40%3Ccommits.trafficcontrol.apache.org%3E","https://lists.apache.org/thread.html/42b207e9f526353b504591684bd02a5e9fcb4b8f28534253d07740a0%40%3Cusers.trafficcontrol.apache.org%3E","https://lists.apache.org/thread.html/bb09fc29e9c2ee85b118a3d5748a8a523d30cf691ff8b606c6a1748c%40%3Ccommits.trafficcontrol.apache.org%3E"],"products":["apache:traffic_control"],"source":"nvd","synced_at":"2026-10-19T20:43:44.556243339+00:00"},"epss":{"cve":"CVE-2017-7670","score":0.04671,"percentile":0.91767,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-f2wr-c4c4-xjg7","url":"https://osv.dev/vulnerability/GHSA-f2wr-c4c4-xjg7","summary":"Apache Traffic Control vulnerable to Slowloris-style Denial of Service attack","modified":"2025-07-09T15:40:27Z","packages":[{"ecosystem":"Go","name":"github.com/apache/trafficcontrol","purl":"pkg:golang/github.com/apache/trafficcontrol","ranges":[">=1.1.4 <1.8.1"],"fixed":["1.8.1"]},{"ecosystem":"Go","name":"github.com/apache/trafficcontrol","purl":"pkg:golang/github.com/apache/trafficcontrol","ranges":[">=2.0.0-RC0 <2.0.0"],"fixed":["2.0.0"]},{"ecosystem":"Go","name":"github.com/apache/trafficcontrol","purl":"pkg:golang/github.com/apache/trafficcontrol","ranges":[">=2.1.0-RC0 <2.1.0-RC1"],"fixed":["2.1.0-RC1"]},{"ecosystem":"Go","name":"github.com/apache/trafficcontrol","purl":"pkg:golang/github.com/apache/trafficcontrol","ranges":["<0.0.0-20170531185407-738c10fa1b58"],"fixed":["0.0.0-20170531185407-738c10fa1b58"]},{"ecosystem":"Go","name":"github.com/apache/trafficcontrol","purl":"pkg:golang/github.com/apache/trafficcontrol","ranges":[">=0.0.0 <1.1.4-0.20170531185407-738c10fa1b58"],"fixed":["1.1.4-0.20170531185407-738c10fa1b58"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}