libreswan: vulnerability in the processing of IKEv1 informational packets due to missing integrity check
Published Jun 12, 2019
3.1
LOWCVSS 3.1
EPSS 0.51%
Description
The Libreswan Project has found a vulnerability in the processing of IKEv1 informational exchange packets which are encrypted and integrity protected using the established IKE SA encryption and integrity keys, but as a receiver, the integrity check value was not verified. This issue affects versions before 3.29.
Affected products
-
- Version 3.29StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| the libreswan Project | Libreswan | n/a |
|
Configuration 1
- < 3.29
- < 5.0.0
- n/a
Configuration 2
- 29
- 30
Configuration 3
- 8.0
No data.
Red Hat Enterprise Linux 8
libreswan-0:3.29-6.el8
Fixed · RHSA-2019:3391
Red Hat Enterprise Linux 5
openswan
Out of support scope
Red Hat Enterprise Linux 6
libreswan
Out of support scope
Red Hat Enterprise Linux 6
openswan
Out of support scope
Red Hat Enterprise Linux 7
libreswan
Out of support scope
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | libreswan-0:3.29-6.el8 | Fixed | RHSA-2019:3391 |
| Red Hat Enterprise Linux 5 | openswan | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | libreswan | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | openswan | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | libreswan | Out of support scope | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
If all IKE peers support IKEv2, it is possible to reconfigure IKEv1 connections to use IKEv2 via the "ikev2=insist" keyword.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:M/Au:S/C:N/I:N/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 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.51% (0.00509) | 41.26th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.51% (0.00512) | 39.30th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.20% (0.00198) | 39.79th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.12% (0.00122) | 48.18th | v3 (v2023.03.01) |
| Jun 5, 2024 | 0.13% (0.00134) | 47.13th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.12% (0.00117) | 45.36th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00100) | 39.65th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.73% (0.06726) | 78.88th | v2 (v2022.01.01) |
| Feb 3, 2022 | 5.36% (0.05363) | 79.74th | v1 |
| Jan 6, 2022 | 5.36% (0.05363) | 79.54th | v1 |
| Jan 5, 2022 | 1.25% (0.01247) | 69.74th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.25% (0.01247) | 0.00th | v1 |
References (9)
- https://access.redhat.com/errata/RHSA-2019:3391 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2019-10155 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1714141 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10155 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://libreswan.org/security/CVE-2019-10155/ x_refsource_MISCPatchVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUEXFCN7FAYBKJBQJLYCEUQUCHDEJRZW/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LFGPGLLKAXSLWFI62A6BZHTZSCHRCBXS/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2019-10155
- https://www.cve.org/CVERecord?id=CVE-2019-10155
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2019:3391 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2019-10155 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1714141 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10155 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://libreswan.org/security/CVE-2019-10155/ | x_refsource_MISCPatchVendor Advisory | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUEXFCN7FAYBKJBQJLYCEUQUCHDEJRZW/ | vendor-advisoryx_refsource_FEDORA | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LFGPGLLKAXSLWFI62A6BZHTZSCHRCBXS/ | vendor-advisoryx_refsource_FEDORA | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-10155 | ||
| https://www.cve.org/CVERecord?id=CVE-2019-10155 |
Change history (0)
No recorded changes yet.