Suricata before 4.0.4 is prone to an HTTP detection bypass vulnerability in detect.c and stream-tcp.c
Published Feb 7, 2018
5.3
MEDIUMCVSS 3.0
EPSS 24.29%
Description
Suricata before 4.0.4 is prone to an HTTP detection bypass vulnerability in detect.c and stream-tcp.c. If a malicious server breaks a normal TCP flow and sends data before the 3-way handshake is complete, then the data sent by the malicious server will be accepted by web clients such as a web browser or Linux CLI utilities, but ignored by Suricata IDS signatures. This mostly affects IDS signatures for the HTTP protocol and TCP stream content; signatures for TCP packets will inspect such network traffic as usual.
Affected products
No data.
Configuration 1
- < 4.0.4
Configuration 2
- 8.0
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:L/A:N
AV:N/AC:L/Au:N/C:N/I:P/A:N
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 (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 24.29% (0.24289) | 97.80th | v5 (v2026.06.15) |
| Jul 6, 2026 | 24.71% (0.24712) | 97.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 30.49% (0.30488) | 97.99th | v5 (v2026.06.15) |
| Nov 21, 2025 | 37.43% (0.37431) | 97.00th | v4 (v2025.03.14) |
| Nov 18, 2025 | 39.01% (0.39006) | 97.10th | v4 (v2025.03.14) |
| Sep 1, 2025 | 37.43% (0.37431) | 97.09th | v4 (v2025.03.14) |
| May 7, 2025 | 39.40% (0.39398) | 97.08th | v4 (v2025.03.14) |
| Mar 30, 2025 | 40.44% (0.40440) | 97.07th | v4 (v2025.03.14) |
| Mar 29, 2025 | 42.14% (0.42144) | 96.18th | v4 (v2025.03.14) |
| Mar 17, 2025 | 40.44% (0.40440) | 97.03th | v4 (v2025.03.14) |
| Dec 17, 2024 | 23.47% (0.23475) | 96.58th | v3 (v2023.03.01) |
| Jul 1, 2023 | 59.67% (0.59674) | 97.26th | v3 (v2023.03.01) |
| May 19, 2023 | 64.47% (0.64467) | 97.33th | v3 (v2023.03.01) |
| May 8, 2023 | 76.08% (0.76083) | 97.67th | v3 (v2023.03.01) |
| Mar 27, 2023 | 71.52% (0.71518) | 97.48th | v3 (v2023.03.01) |
| Mar 8, 2023 | 84.11% (0.84114) | 97.85th | v3 (v2023.03.01) |
| Mar 7, 2023 | 88.65% (0.88654) | 98.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 8.94% (0.08944) | 94.01th | v2 (v2022.01.01) |
| Apr 1, 2022 | 8.94% (0.08944) | 93.48th | v2 (v2022.01.01) |
| Feb 4, 2022 | 8.94% (0.08944) | 83.03th | v2 (v2022.01.01) |
| Feb 3, 2022 | 5.68% (0.05680) | 80.53th | v1 |
| Jan 6, 2022 | 5.68% (0.05680) | 80.34th | v1 |
| Sep 1, 2021 | 5.68% (0.05680) | 89.01th | v1 |
| Apr 14, 2021 | 5.68% (0.05680) | 0.00th | v1 |
References (5)
- https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1 x_refsource_CONFIRMPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://redmine.openinfosecfoundation.org/issues/2427 x_refsource_CONFIRMThird Party Advisory
- https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/ x_refsource_CONFIRMVendor Advisory
- https://www.exploit-db.com/exploits/44247/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1 | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://redmine.openinfosecfoundation.org/issues/2427 | x_refsource_CONFIRMThird Party Advisory | |
| https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/ | x_refsource_CONFIRMVendor Advisory | |
| https://www.exploit-db.com/exploits/44247/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.