Uncontrolled resource consumption in Apache Traffic Control
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-400.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Traffic Control | 1.8.0 incubating; 2.0.0 RC0 incubating | — | No fix listed | CNA |
| — | github.com/apache/trafficcontrol (Go) | 1.1.4 to before 1.8.1 | 1.8.1 | Patch available | GHSA-f2wr-c4c4-xjg7 |
| — | github.com/apache/trafficcontrol (Go) | 2.0.0-RC0 to before 2.0.0 | 2.0.0 | Patch available | GHSA-f2wr-c4c4-xjg7 |
| — | github.com/apache/trafficcontrol (Go) | 2.1.0-RC0 to before 2.1.0-RC1 | 2.1.0-RC1 | Patch available | GHSA-f2wr-c4c4-xjg7 |
| — | github.com/apache/trafficcontrol (Go) | before 0.0.0-20170531185407-738c10fa1b58 | 0.0.0-20170531185407-738c10fa1b58 | Patch available | GHSA-f2wr-c4c4-xjg7 |
| — | github.com/apache/trafficcontrol (Go) | 0.0.0 to before 1.1.4-0.20170531185407-738c10fa1b58 | 1.1.4-0.20170531185407-738c10fa1b58 | Patch available | GHSA-f2wr-c4c4-xjg7 |
- Apache Traffic Control VendorApache Affected 1.8.0 incubating; 2.0.0 RC0 incubating Fixed in — No fix listed CNA
- github.com/apache/trafficcontrol (Go) Vendor— Affected 1.1.4 to before 1.8.1 Fixed in 1.8.1 Patch available GHSA-f2wr-c4c4-xjg7
- github.com/apache/trafficcontrol (Go) Vendor— Affected 2.0.0-RC0 to before 2.0.0 Fixed in 2.0.0 Patch available GHSA-f2wr-c4c4-xjg7
- github.com/apache/trafficcontrol (Go) Vendor— Affected 2.1.0-RC0 to before 2.1.0-RC1 Fixed in 2.1.0-RC1 Patch available GHSA-f2wr-c4c4-xjg7
- github.com/apache/trafficcontrol (Go) Vendor— Affected before 0.0.0-20170531185407-738c10fa1b58 Fixed in 0.0.0-20170531185407-738c10fa1b58 Patch available GHSA-f2wr-c4c4-xjg7
- github.com/apache/trafficcontrol (Go) Vendor— Affected 0.0.0 to before 1.1.4-0.20170531185407-738c10fa1b58 Fixed in 1.1.4-0.20170531185407-738c10fa1b58 Patch available GHSA-f2wr-c4c4-xjg7
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:traffic_control:*:*:*:*:*:*:*:* | up to 1.8.0 | Vulnerable | Apache |
| cpe:2.3:a:apache:traffic_control:1.8.1:rc0:*:*:*:*:*:* | 1.8.1 rc0 | Vulnerable | Apache |
| cpe:2.3:a:apache:traffic_control:2.0.0:rc1:*:*:*:*:*:* | 2.0.0 rc1 | Vulnerable | Apache |
| cpe:2.3:a:apache:traffic_control:2.0.0:rc2:*:*:*:*:*:* | 2.0.0 rc2 | Vulnerable | Apache |
| cpe:2.3:a:apache:traffic_control:2.0.0:rc3:*:*:*:*:*:* | 2.0.0 rc3 | Vulnerable | Apache |
| cpe:2.3:a:apache:traffic_control:2.0.0:rc4:*:*:*:*:*:* | 2.0.0 rc4 | Vulnerable | Apache |
| cpe:2.3:a:apache:traffic_control:2.0.0:rc5:*:*:*:*:*:* | 2.0.0 rc5 | Vulnerable | Apache |
| cpe:2.3:a:apache:traffic_control:2.0.0:rc6:*:*:*:*:*:* | 2.0.0 rc6 | Vulnerable | Apache |
- cpe:2.3:a:apache:traffic_control:*:*:*:*:*:*:*:* Versions up to 1.8.0 Vulnerable ·Apache
- cpe:2.3:a:apache:traffic_control:1.8.1:rc0:*:*:*:*:*:* Versions 1.8.1 rc0 Vulnerable ·Apache
- cpe:2.3:a:apache:traffic_control:2.0.0:rc1:*:*:*:*:*:* Versions 2.0.0 rc1 Vulnerable ·Apache
- cpe:2.3:a:apache:traffic_control:2.0.0:rc2:*:*:*:*:*:* Versions 2.0.0 rc2 Vulnerable ·Apache
- cpe:2.3:a:apache:traffic_control:2.0.0:rc3:*:*:*:*:*:* Versions 2.0.0 rc3 Vulnerable ·Apache
- cpe:2.3:a:apache:traffic_control:2.0.0:rc4:*:*:*:*:*:* Versions 2.0.0 rc4 Vulnerable ·Apache
- cpe:2.3:a:apache:traffic_control:2.0.0:rc5:*:*:*:*:*:* Versions 2.0.0 rc5 Vulnerable ·Apache
- cpe:2.3:a:apache:traffic_control:2.0.0:rc6:*:*:*:*:*:* Versions 2.0.0 rc6 Vulnerable ·Apache
Remediation
- Fix · GHSA-f2wr-c4c4-xjg7 github.com/apache/trafficcontrol (Go) Fixed in 1.8.1 Advisory →
- Fix · GHSA-f2wr-c4c4-xjg7 github.com/apache/trafficcontrol (Go) Fixed in 2.0.0 Advisory →
- Fix · GHSA-f2wr-c4c4-xjg7 github.com/apache/trafficcontrol (Go) Fixed in 2.1.0-RC1 Advisory →
- Fix · GHSA-f2wr-c4c4-xjg7 github.com/apache/trafficcontrol (Go) Fixed in 0.0.0-20170531185407-738c10fa1b58 Advisory →
- Fix · GHSA-f2wr-c4c4-xjg7 github.com/apache/trafficcontrol (Go) Fixed in 1.1.4-0.20170531185407-738c10fa1b58 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2017-7670
- 2026-10-03 Alias added: GHSA-f2wr-c4c4-xjg7
References
Other 10
- [users] 20170707 Apache Traffic Control Traffic Router Slowloris Denial of Service Vulnerability - CVE-2017-7670
- [trafficcontrol-commits] 20190906 [trafficcontrol-website] branch asf-site updated: Adds CVE-2019-12405 to security page
- [trafficcontrol-commits] 20210616 [trafficcontrol-website] branch asf-site updated: Fix CVE-2020-17522 link
- https://github.com/apache/trafficcontrol/pull/633
- https://github.com/apache/trafficcontrol/pull/634
- https://github.com/apache/trafficcontrol/commit/738c10fa1b5861e4cc3944dc7c3065d16f4a708c
- https://github.com/apache/trafficcontrol
- https://lists.apache.org/thread.html/42b207e9f526353b504591684bd02a5e9fcb4b8f28534253d07740a0@%3Cusers.trafficcontrol.apache.org%3E
- https://lists.apache.org/thread.html/bb09fc29e9c2ee85b118a3d5748a8a523d30cf691ff8b606c6a1748c@%3Ccommits.trafficcontrol.apache.org%3E
- https://lists.apache.org/thread.html/r3c675031ac220b5eae64a9c84a03ee60045c6045738607dca4a96cb8@%3Ccommits.trafficcontrol.apache.org%3E
More Apache Traffic Control vulnerabilities
- TI-2024-30436 Apache Traffic Control: SQL Injection in Traffic Ops endpoint PUT deliveryservice_request_comments CVSS 3.1CRITICAL 9.9
- TI-2021-19325 LDAP filter injection vulnerability in Traffic Ops CVSS 3.1CRITICAL 9.8
- TI-2019-09251 Improper authentication in Apache Traffic Control CVSS 3.1CRITICAL 9.8
- TI-2025-38028 Apache Traffic Control: ReDoS issue in Traffic Router configuration CVSS 3.1HIGH 7.5
- TI-2022-07358 Server-Side Request Forgery in Traffic Ops endpoint POST /user/login/oauth CVSS 3.1HIGH 7.5
- TI-2020-13271 Incorrect permission assignment in Apache Traffic Control CVSS 3.1MEDIUM 5.8
Sources
- CVE-2017-7670 · CVE Program
- CVE-2017-7670 · NVD
- FIRST EPSS
- GHSA-f2wr-c4c4-xjg7 · GitHub Advisory Database · CC BY 4.0
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