The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might allow remote attackers to bypass intrusion-prevention functionality via a crafted HTTP request
Published Mar 20, 2017
9.8
CRITICALCVSS 3.0
EPSS 3.26%
Description
The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might allow remote attackers to bypass intrusion-prevention functionality via a crafted HTTP request.
Affected products
No data.
- ≤ 2.0.5
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:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/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 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 3.26% (0.03258) | 87.96th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.26% (0.03258) | 86.70th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.86% (0.01862) | 81.44th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.35% (0.04354) | 81.22th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.86% (0.01862) | 81.86th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.30% (0.00302) | 70.46th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.30% (0.00302) | 68.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.30% (0.00302) | 64.84th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
References (3)
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777523 x_refsource_CONFIRMThird Party Advisory
- https://redmine.openinfosecfoundation.org/issues/1364 x_refsource_CONFIRMThird Party Advisory
- https://suricata-ids.org/2015/01/15/suricata-2-0-6-available/ x_refsource_CONFIRMRelease NotesVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777523 | x_refsource_CONFIRMThird Party Advisory | |
| https://redmine.openinfosecfoundation.org/issues/1364 | x_refsource_CONFIRMThird Party Advisory | |
| https://suricata-ids.org/2015/01/15/suricata-2-0-6-available/ | x_refsource_CONFIRMRelease NotesVendor Advisory |
Change history (0)
No recorded changes yet.