usn-8117-1
Vulnerability from osv_ubuntu
Published
2026-03-23 14:30
Modified
2026-04-27 14:11
Summary
strongswan vulnerability
Details
Kazuma Matsumoto discovered that strongSwan incorrectly handled EAP-TTLS AVPs when using the eap-ttls plugin. An attacker could possibly use this issue to cause strongSwan to consume resources and crash, resulting in a denial of service.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-25075",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "charon-cmd",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "charon-systemd",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "libcharon-extauth-plugins",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "libcharon-extra-plugins",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "libstrongswan",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "libstrongswan-extra-plugins",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "libstrongswan-standard-plugins",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "strongswan",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "strongswan-charon",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "strongswan-libcharon",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "strongswan-nm",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "strongswan-pki",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "strongswan-scepclient",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "strongswan-starter",
"binary_version": "5.9.5-2ubuntu2.5"
},
{
"binary_name": "strongswan-swanctl",
"binary_version": "5.9.5-2ubuntu2.5"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "strongswan",
"purl": "pkg:deb/ubuntu/strongswan@5.9.5-2ubuntu2.5?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.9.5-2ubuntu2.5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.9.1-1ubuntu3",
"5.9.1-1ubuntu3.1",
"5.9.4-1ubuntu1",
"5.9.4-1ubuntu2",
"5.9.4-1ubuntu3",
"5.9.4-1ubuntu4",
"5.9.5-2ubuntu1",
"5.9.5-2ubuntu2",
"5.9.5-2ubuntu2.1",
"5.9.5-2ubuntu2.2",
"5.9.5-2ubuntu2.3",
"5.9.5-2ubuntu2.4"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-25075",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "charon-cmd",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "charon-systemd",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "libcharon-extauth-plugins",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "libcharon-extra-plugins",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "libstrongswan",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "libstrongswan-extra-plugins",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "libstrongswan-standard-plugins",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "strongswan",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "strongswan-charon",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "strongswan-libcharon",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "strongswan-nm",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "strongswan-pki",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "strongswan-starter",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
},
{
"binary_name": "strongswan-swanctl",
"binary_version": "5.9.13-2ubuntu4.24.04.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "strongswan",
"purl": "pkg:deb/ubuntu/strongswan@5.9.13-2ubuntu4.24.04.2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.9.13-2ubuntu4.24.04.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.9.11-1ubuntu1",
"5.9.11-1ubuntu2",
"5.9.12-1ubuntu1",
"5.9.13-2ubuntu1",
"5.9.13-2ubuntu3",
"5.9.13-2ubuntu4",
"5.9.13-2ubuntu4.24.04.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-25075",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "charon-cmd",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "charon-systemd",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "libcharon-extauth-plugins",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "libcharon-extra-plugins",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "libstrongswan",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "libstrongswan-extra-plugins",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "libstrongswan-standard-plugins",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "strongswan",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "strongswan-charon",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "strongswan-libcharon",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "strongswan-nm",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "strongswan-pki",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "strongswan-starter",
"binary_version": "6.0.1-6ubuntu4.2"
},
{
"binary_name": "strongswan-swanctl",
"binary_version": "6.0.1-6ubuntu4.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "strongswan",
"purl": "pkg:deb/ubuntu/strongswan@6.0.1-6ubuntu4.2?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.0.1-6ubuntu4.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.9.13-2ubuntu4",
"5.9.13-2ubuntu5",
"6.0.1-6ubuntu2",
"6.0.1-6ubuntu4",
"6.0.1-6ubuntu4.1"
]
}
],
"aliases": [],
"details": "Kazuma Matsumoto discovered that strongSwan incorrectly handled EAP-TTLS\nAVPs when using the eap-ttls plugin. An attacker could possibly use this\nissue to cause strongSwan to consume resources and crash, resulting in a\ndenial of service.",
"id": "USN-8117-1",
"modified": "2026-04-27T14:11:51Z",
"published": "2026-03-23T14:30:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8117-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-25075"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "strongswan vulnerability",
"upstream": [
"UBUNTU-CVE-2026-25075"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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