There is a DOS attack vulnerability in Apache Traffic Server (ATS) 5.2.0 to 5.3.2, 6.0.0 to 6.2.0, and 7.0.0 with the TLS handshake
Published Feb 27, 2018
7.5
HIGHCVSS 3.0
EPSS 2.19%
Description
There is a DOS attack vulnerability in Apache Traffic Server (ATS) 5.2.0 to 5.3.2, 6.0.0 to 6.2.0, and 7.0.0 with the TLS handshake. This issue can cause the server to coredump.
Affected products
-
- Version 5.2.0 to 5.3.2StatusaffectedConstraints-
- Version 6.0.0 to 6.2.0StatusaffectedConstraints-
- Version 7.0.0StatusaffectedConstraints-
- 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 Server | n/a |
|
Configuration 1
- ≥ 5.2.0 · ≤ 5.3.2
- > 6.0.0 · ≤ 6.2.0
- 7.0.0
Configuration 2
- 9.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
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 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 2.19% (0.02188) | 81.78th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.27% (0.02265) | 80.66th | v5 (v2026.06.15) |
| Dec 28, 2025 | 4.27% (0.04270) | 88.46th | v4 (v2025.03.14) |
| Dec 27, 2025 | 2.74% (0.02741) | 85.60th | v4 (v2025.03.14) |
| Oct 28, 2025 | 4.27% (0.04270) | 88.30th | v4 (v2025.03.14) |
| Oct 27, 2025 | 2.74% (0.02741) | 85.47th | v4 (v2025.03.14) |
| Oct 1, 2025 | 4.27% (0.04270) | 88.40th | v4 (v2025.03.14) |
| Jul 30, 2025 | 2.74% (0.02741) | 85.40th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.27% (0.04270) | 88.08th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.12% (0.00123) | 48.28th | v3 (v2023.03.01) |
| Jan 7, 2024 | 0.12% (0.00123) | 46.41th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00114) | 43.21th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.85% (0.01855) | 47.92th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.85% (0.01855) | 0.00th | v1 |
References (2)
- https://lists.apache.org/thread.html/203bdcf9bbb718f3dc6f7aaf3e2af632474d51fa9e7bfb7832729905%40%3Cdev.trafficserver.apache.org%3E mailing-listx_refsource_MLIST
- https://www.debian.org/security/2018/dsa-4128 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://lists.apache.org/thread.html/203bdcf9bbb718f3dc6f7aaf3e2af632474d51fa9e7bfb7832729905%40%3Cdev.trafficserver.apache.org%3E | mailing-listx_refsource_MLIST | |
| https://www.debian.org/security/2018/dsa-4128 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.