The Traffic Router component of the incubating Apache Traffic Control project is vulnerable to a Slowloris style Denial of Service attack
Published Jul 10, 2017
7.5
HIGHCVSS 3.0
EPSS 4.67%
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.
Affected products
-
- Version 1.8.0 incubatingStatusaffectedConstraints-
- Version 2.0.0 RC0 incubatingStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache Traffic Control | n/a |
|
- ≤ 1.8.0
- 1.8.1
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.0
No data.
No Red Hat product state for this CVE.
github.com/apache/trafficcontrol
Go
Introduced 0.0.0 Fixed 1.1.4-0.20170531185407-738c10fa1b58github.com/apache/trafficcontrol
Go
Introduced 1.1.4 Fixed 1.8.1github.com/apache/trafficcontrol
Go
Introduced 2.0.0-RC0 Fixed 2.0.0github.com/apache/trafficcontrol
Go
Introduced 2.1.0-RC0 Fixed 2.1.0-RC1github.com/apache/trafficcontrol
Go
Introduced 0 Fixed 0.0.0-20170531185407-738c10fa1b58
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/apache/trafficcontrol | 0.0.0 | 1.1.4-0.20170531185407-738c10fa1b58 |
| Go | github.com/apache/trafficcontrol | 1.1.4 | 1.8.1 |
| Go | github.com/apache/trafficcontrol | 2.0.0-RC0 | 2.0.0 |
| Go | github.com/apache/trafficcontrol | 2.1.0-RC0 | 2.1.0-RC1 |
| Go | github.com/apache/trafficcontrol | 0 | 0.0.0-20170531185407-738c10fa1b58 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.67% (0.04671) | 91.48th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.80% (0.04800) | 90.77th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.73% (0.01728) | 81.19th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.18% (0.00183) | 56.89th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.18% (0.00183) | 55.41th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.22% (0.00219) | 58.03th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.05% (0.03053) | 65.09th | v1 |
| Jan 6, 2022 | 3.05% (0.03053) | 64.75th | v1 |
| Sep 1, 2021 | 3.05% (0.03053) | 81.03th | v1 |
| Jun 24, 2021 | 3.05% (0.03053) | 0.00th | v1 |
| Jun 17, 2021 | 12.38% (0.12380) | 0.00th | v1 |
| Apr 14, 2021 | 2.30% (0.02303) | 0.00th | v1 |
References (11)
- https://github.com/advisories/GHSA-f2wr-c4c4-xjg7 Advisory
- https://github.com/apache/trafficcontrol/commit/738c10fa1b5861e4cc3944dc7c3065d16f4a708c
- https://github.com/apache/trafficcontrol/pull/633
- https://github.com/apache/trafficcontrol/pull/634
- https://lists.apache.org/thread.html/42b207e9f526353b504591684bd02a5e9fcb4b8f28534253d07740a0%40%3Cusers.trafficcontrol.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/42b207e9f526353b504591684bd02a5e9fcb4b8f28534253d07740a0@%3Cusers.trafficcontrol.apache.org%3E
- https://lists.apache.org/thread.html/bb09fc29e9c2ee85b118a3d5748a8a523d30cf691ff8b606c6a1748c%40%3Ccommits.trafficcontrol.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/bb09fc29e9c2ee85b118a3d5748a8a523d30cf691ff8b606c6a1748c@%3Ccommits.trafficcontrol.apache.org%3E
- https://lists.apache.org/thread.html/r3c675031ac220b5eae64a9c84a03ee60045c6045738607dca4a96cb8%40%3Ccommits.trafficcontrol.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r3c675031ac220b5eae64a9c84a03ee60045c6045738607dca4a96cb8@%3Ccommits.trafficcontrol.apache.org%3E
- https://nvd.nist.gov/vuln/detail/CVE-2017-7670
Change history (0)
No recorded changes yet.