HIGH
strongswan: heap buffer overflow using crafted certificates
Published Oct 3, 2018
7.5
HIGHCVSS 3.0
EPSS 3.51%
Description
The gmp plugin in strongSwan before 5.7.1 has a Buffer Overflow via a crafted certificate.
Affected products
No data.
Configuration 1
- < 5.7.1
Configuration 2
OR
- 8.0
- 9.0
Configuration 3
OR
- 14.04
- 16.04
- 18.04
No data.
Red Hat Enterprise Linux 7
strongimcv
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | strongimcv | Not affected | n/a |
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.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
1 other source (Red Hat) ▾
3.1 LOW Red Hat
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact Low
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.51% 0.03511
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03511
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 (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.51% (0.03511) | 88.82th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.51% (0.03511) | 87.65th | v5 (v2026.06.15) |
| Nov 21, 2025 | 3.98% (0.03978) | 87.91th | v4 (v2025.03.14) |
| Nov 18, 2025 | 8.35% (0.08350) | 91.41th | v4 (v2025.03.14) |
| Oct 1, 2025 | 3.98% (0.03978) | 87.97th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.17% (0.05169) | 88.92th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.87% (0.07869) | 86.41th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.17% (0.05169) | 89.16th | v4 (v2025.03.14) |
| Jul 20, 2024 | 1.07% (0.01072) | 84.39th | v3 (v2023.03.01) |
| May 22, 2024 | 1.07% (0.01072) | 84.21th | v3 (v2023.03.01) |
| Feb 24, 2024 | 1.46% (0.01463) | 86.33th | v3 (v2023.03.01) |
| Nov 8, 2023 | 1.60% (0.01600) | 85.91th | v3 (v2023.03.01) |
| Sep 27, 2023 | 1.51% (0.01514) | 85.44th | v3 (v2023.03.01) |
| Jul 8, 2023 | 1.63% (0.01628) | 85.78th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.51% (0.01513) | 84.90th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.07% (0.02069) | 50.36th | v1 |
| Jan 6, 2022 | 2.07% (0.02069) | 49.86th | v1 |
| Sep 1, 2021 | 2.07% (0.02069) | 77.27th | v1 |
| Apr 14, 2021 | 2.07% (0.02069) | 0.00th | v1 |
Weaknesses (2)
References (13)
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html vendor-advisoryx_refsource_SUSE
- https://access.redhat.com/security/cve/CVE-2018-17540 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1635877 Issue Tracking
- https://download.strongswan.org/security/CVE-2018-17540/ x_refsource_CONFIRMPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00001.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-17540
- https://security.gentoo.org/glsa/201811-16 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://usn.ubuntu.com/3774-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-17540
- https://www.debian.org/security/2018/dsa-4309 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.strongswan.org/blog/2018/10/01/strongswan-vulnerability-%28cve-2018-17540%29.html x_refsource_CONFIRM
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 3, 2018
Updated Aug 5, 2024
Reserved Sep 26, 2018
Link CVE-2018-17540
CISA Vulnrichment
Updated n/a