MEDIUM
CRLF injection vulnerability in the web interface in OpenVPN Access Server 2.1.4 allows remote attackers to inject arbitrary HTTP headers and consequently conduct session fixation attacks and possibly HTTP response splitting attacks via "%0A" characters in the PATH_INFO to __session_start__/
Published May 25, 2017
6.1
MEDIUMCVSS 3.0
EPSS 4.62%
Description
CRLF injection vulnerability in the web interface in OpenVPN Access Server 2.1.4 allows remote attackers to inject arbitrary HTTP headers and consequently conduct session fixation attacks and possibly HTTP response splitting attacks via "%0A" characters in the PATH_INFO to __session_start__/.
Affected products
No data.
- 2.1.4
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.
6.1 MEDIUM NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Impact Low
Integrity Impact Low
Availability Impact None
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
4.62% 0.04622
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.04622
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 (51 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.62% (0.04622) | 91.41th | v5 (v2026.06.15) |
| Sep 22, 2026 | 4.62% (0.04622) | 91.28th | v5 (v2026.06.15) |
| Sep 21, 2026 | 6.94% (0.06941) | 93.89th | v5 (v2026.06.15) |
| Sep 6, 2026 | 4.62% (0.04622) | 91.08th | v5 (v2026.06.15) |
| Sep 5, 2026 | 6.94% (0.06941) | 93.75th | v5 (v2026.06.15) |
| Aug 30, 2026 | 4.62% (0.04622) | 91.03th | v5 (v2026.06.15) |
| Aug 28, 2026 | 6.94% (0.06941) | 93.72th | v5 (v2026.06.15) |
| Aug 24, 2026 | 4.62% (0.04622) | 90.98th | v5 (v2026.06.15) |
| Aug 23, 2026 | 6.94% (0.06941) | 93.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.62% (0.04622) | 90.48th | v5 (v2026.06.15) |
| Mar 4, 2026 | 8.46% (0.08462) | 92.20th | v4 (v2025.03.14) |
| Mar 1, 2026 | 19.32% (0.19322) | 95.28th | v4 (v2025.03.14) |
| Feb 4, 2026 | 8.46% (0.08462) | 92.13th | v4 (v2025.03.14) |
| Feb 1, 2026 | 19.32% (0.19322) | 95.24th | v4 (v2025.03.14) |
| Jan 4, 2026 | 8.46% (0.08462) | 92.06th | v4 (v2025.03.14) |
| Jan 1, 2026 | 19.32% (0.19322) | 95.22th | v4 (v2025.03.14) |
| Dec 4, 2025 | 8.46% (0.08462) | 92.00th | v4 (v2025.03.14) |
| Dec 1, 2025 | 19.32% (0.19322) | 95.17th | v4 (v2025.03.14) |
| Nov 4, 2025 | 8.46% (0.08462) | 91.95th | v4 (v2025.03.14) |
| Nov 1, 2025 | 19.32% (0.19322) | 95.15th | v4 (v2025.03.14) |
| Oct 22, 2025 | 8.46% (0.08462) | 91.92th | v4 (v2025.03.14) |
| Oct 4, 2025 | 5.51% (0.05514) | 89.81th | v4 (v2025.03.14) |
| Oct 1, 2025 | 14.83% (0.14832) | 94.32th | v4 (v2025.03.14) |
| Sep 4, 2025 | 5.51% (0.05514) | 89.88th | v4 (v2025.03.14) |
| Sep 1, 2025 | 14.83% (0.14832) | 94.31th | v4 (v2025.03.14) |
| Aug 4, 2025 | 5.51% (0.05514) | 89.86th | v4 (v2025.03.14) |
| Aug 1, 2025 | 14.83% (0.14832) | 94.27th | v4 (v2025.03.14) |
| Jul 4, 2025 | 5.51% (0.05514) | 89.78th | v4 (v2025.03.14) |
| Jul 1, 2025 | 14.83% (0.14832) | 94.23th | v4 (v2025.03.14) |
| Jun 4, 2025 | 5.51% (0.05514) | 89.72th | v4 (v2025.03.14) |
| Jun 1, 2025 | 14.83% (0.14832) | 94.19th | v4 (v2025.03.14) |
| May 4, 2025 | 5.51% (0.05514) | 89.68th | v4 (v2025.03.14) |
| May 1, 2025 | 14.83% (0.14832) | 94.16th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.51% (0.05514) | 89.26th | v4 (v2025.03.14) |
| Mar 29, 2025 | 58.51% (0.58514) | 97.42th | v4 (v2025.03.14) |
| Mar 28, 2025 | 5.51% (0.05514) | 89.28th | v4 (v2025.03.14) |
| Mar 24, 2025 | 0.54% (0.00541) | 65.05th | v4 (v2025.03.14) |
| Mar 23, 2025 | 5.51% (0.05514) | 88.45th | v4 (v2025.03.14) |
| Mar 18, 2025 | 0.54% (0.00541) | 65.68th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.67% (0.05675) | 89.70th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.32% (0.00321) | 70.89th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.32% (0.00321) | 69.78th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.32% (0.00321) | 65.87th | 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) |
| Feb 3, 2022 | 1.11% (0.01110) | 29.52th | v1 |
| Jan 6, 2022 | 1.11% (0.01110) | 28.89th | v1 |
| Sep 1, 2021 | 1.11% (0.01110) | 66.78th | v1 |
| Apr 14, 2021 | 1.11% (0.01110) | 0.00th | v1 |
Weaknesses (1)
References (3)
- http://www.openwall.com/lists/oss-security/2017/05/23/13 mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory
- http://www.securitytracker.com/id/1038547 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://sysdream.com/news/lab/2017-05-05-cve-2017-5868-openvpn-access-server-crlf-injection-with-session-fixation/ x_refsource_MISCExploitMitigationThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2017/05/23/13 | mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory | |
| http://www.securitytracker.com/id/1038547 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://sysdream.com/news/lab/2017-05-05-cve-2017-5868-openvpn-access-server-crlf-injection-with-session-fixation/ | x_refsource_MISCExploitMitigationThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 25, 2017
Updated Aug 5, 2024
Reserved Feb 2, 2017
Link CVE-2017-5868
CISA Vulnrichment
Updated n/a