CVE-2017-7670
The Traffic Router component of the incubating Apache Traffic Control project is vulnerable to a Slowloris style Denial of Service attack.…
- Published
- Updated
- Reserved
- Assigned by
- apache
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.
Timeline
ID reserved
By apache
- 3 months later
· 3 months later
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 4.7% · top 8.2% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- Denial of Service
- CWE-400 (opens in a new tab)All about CWE-400 and its CVEs
Affected products
Apache Software Foundation · Apache Traffic Control
- affected 1.8.0 incubating
- affected 2.0.0 RC0 incubating
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/apache/trafficcontrolGHSA-f2wr-c4c4-xjg7 (opens in a new tab)
References (3)
- [users] 20170707 Apache Traffic Control Traffic Router Slowloris Denial of Service Vulnerability - CVE-2017-7670 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [trafficcontrol-commits] 20190906 [trafficcontrol-website] branch asf-site updated: Adds CVE-2019-12405 to security page (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [trafficcontrol-commits] 20210616 [trafficcontrol-website] branch asf-site updated: Fix CVE-2020-17522 link (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-f2wr-c4c4-xjg7 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-7670)Record last updated .