CRITICAL
Authentication bypass via repeated parameters
Published Apr 13, 2018
9.8
CRITICALCVSS 3.0
EPSS 3.28%
Description
A flaw, similar to to CVE-2016-9646, exists in ikiwiki before 3.20170111, in the passwordauth plugin's use of CGI::FormBuilder, allowing an attacker to bypass authentication via repeated parameters.
Affected products
-
- Version before 3.20170111StatusaffectedConstraints-
- Version
Configuration 2
OR
- 7.0
- 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.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.28% 0.03276
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03276
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 (27 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.28% (0.03276) | 88.01th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.60% (0.03597) | 87.92th | v5 (v2026.06.15) |
| Jun 4, 2026 | 3.27% (0.03271) | 87.40th | v4 (v2025.03.14) |
| Feb 9, 2026 | 5.62% (0.05620) | 90.13th | v4 (v2025.03.14) |
| Jan 3, 2026 | 7.44% (0.07441) | 91.52th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.40% (0.10398) | 92.48th | v4 (v2025.03.14) |
| Mar 29, 2025 | 13.60% (0.13604) | 90.38th | v4 (v2025.03.14) |
| Mar 17, 2025 | 10.40% (0.10398) | 92.64th | v4 (v2025.03.14) |
| Jul 20, 2024 | 1.69% (0.01687) | 87.88th | v3 (v2023.03.01) |
| Feb 8, 2024 | 1.69% (0.01687) | 87.28th | v3 (v2023.03.01) |
| Jan 27, 2024 | 3.33% (0.03325) | 90.42th | v3 (v2023.03.01) |
| Nov 7, 2023 | 4.20% (0.04202) | 91.25th | v3 (v2023.03.01) |
| Oct 14, 2023 | 10.93% (0.10932) | 94.46th | v3 (v2023.03.01) |
| Sep 25, 2023 | 14.66% (0.14664) | 95.10th | v3 (v2023.03.01) |
| Sep 4, 2023 | 25.08% (0.25077) | 96.06th | v3 (v2023.03.01) |
| May 12, 2023 | 42.67% (0.42670) | 96.78th | v3 (v2023.03.01) |
| Apr 25, 2023 | 35.11% (0.35106) | 96.49th | v3 (v2023.03.01) |
| Apr 7, 2023 | 16.77% (0.16768) | 95.20th | v3 (v2023.03.01) |
| Mar 7, 2023 | 19.24% (0.19242) | 95.43th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.04% (0.01040) | 28.32th | v1 |
| Jan 6, 2022 | 1.04% (0.01040) | 27.69th | v1 |
| Sep 1, 2021 | 1.04% (0.01040) | 64.49th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
Weaknesses (1)
References (4)
- http://www.securityfocus.com/bid/95420 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://ikiwiki.info/security/#cve-2017-0356 x_refsource_CONFIRMVendor Advisory
- https://marc.info/?l=oss-security&m=148418234314276&w=2 mailing-listx_refsource_MLISTExploitThird Party Advisory
- https://www.debian.org/security/2017/dsa-3760 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/95420 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://ikiwiki.info/security/#cve-2017-0356 | x_refsource_CONFIRMVendor Advisory | |
| https://marc.info/?l=oss-security&m=148418234314276&w=2 | mailing-listx_refsource_MLISTExploitThird Party Advisory | |
| https://www.debian.org/security/2017/dsa-3760 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner debian
Published Apr 13, 2018
Updated Sep 17, 2024
Reserved Nov 29, 2016
Link CVE-2017-0356
CISA Vulnrichment
Updated n/a