usn-6488-2
Vulnerability from osv_ubuntu
Published
2023-12-14 21:21
Modified
2026-06-25 10:46
Summary
strongswan vulnerability
Details
USN-6488-1 fixed a vulnerability in strongSwan. This update provides the corresponding updates for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
Original advisory details:
Florian Picca discovered that strongSwan incorrectly handled certain DH public values. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly execute arbitrary code.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2023-41913",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "charon-cmd",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "libcharon-extra-plugins",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "libstrongswan",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "libstrongswan-extra-plugins",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "libstrongswan-standard-plugins",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-charon",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-ike",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-ikev1",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-ikev2",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-libcharon",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-nm",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-af-alg",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-agent",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-attr-sql",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-certexpire",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-coupling",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-curl",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-dhcp",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-dnscert",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-dnskey",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-duplicheck",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-aka",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-aka-3gpp2",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-dynamic",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-gtc",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-md5",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-mschapv2",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-peap",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-radius",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-sim",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-sim-file",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-sim-pcsc",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-simaka-pseudonym",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-simaka-reauth",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-simaka-sql",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-tls",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-tnc",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-eap-ttls",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-error-notify",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-farp",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-fips-prf",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-gcrypt",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-gmp",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-ipseckey",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-kernel-libipsec",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-ldap",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-led",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-load-tester",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-lookip",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-mysql",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-ntru",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-openssl",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-pgp",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-pkcs11",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-pubkey",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-radattr",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-soup",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-sql",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-sqlite",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-sshkey",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-systime-fix",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-unbound",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-unity",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-whitelist",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-xauth-eap",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-xauth-generic",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-xauth-noauth",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-plugin-xauth-pam",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-starter",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-tnc-base",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-tnc-client",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-tnc-ifmap",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-tnc-pdp",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
},
{
"binary_name": "strongswan-tnc-server",
"binary_version": "5.3.5-1ubuntu3.8+esm4"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "strongswan",
"purl": "pkg:deb/ubuntu/strongswan@5.3.5-1ubuntu3.8+esm4?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.3.5-1ubuntu3.8+esm4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.1.2-0ubuntu6",
"5.1.2-0ubuntu7",
"5.1.2-0ubuntu8",
"5.3.5-1ubuntu1",
"5.3.5-1ubuntu2",
"5.3.5-1ubuntu3",
"5.3.5-1ubuntu3.1",
"5.3.5-1ubuntu3.2",
"5.3.5-1ubuntu3.3",
"5.3.5-1ubuntu3.4",
"5.3.5-1ubuntu3.5",
"5.3.5-1ubuntu3.7",
"5.3.5-1ubuntu3.8",
"5.3.5-1ubuntu3.8+esm1",
"5.3.5-1ubuntu3.8+esm2",
"5.3.5-1ubuntu3.8+esm3"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2023-41913",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "charon-cmd",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "charon-systemd",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "libcharon-extra-plugins",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "libcharon-standard-plugins",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "libstrongswan",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "libstrongswan-extra-plugins",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "libstrongswan-standard-plugins",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-charon",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-libcharon",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-nm",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-pki",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-scepclient",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-starter",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-swanctl",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-tnc-base",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-tnc-client",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-tnc-ifmap",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-tnc-pdp",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
},
{
"binary_name": "strongswan-tnc-server",
"binary_version": "5.6.2-1ubuntu2.9+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "strongswan",
"purl": "pkg:deb/ubuntu/strongswan@5.6.2-1ubuntu2.9+esm1?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.6.2-1ubuntu2.9+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.5.1-4ubuntu2",
"5.5.1-4ubuntu3",
"5.6.1-2ubuntu1",
"5.6.1-2ubuntu2",
"5.6.1-2ubuntu3",
"5.6.1-2ubuntu4",
"5.6.2-1ubuntu2",
"5.6.2-1ubuntu2.2",
"5.6.2-1ubuntu2.3",
"5.6.2-1ubuntu2.4",
"5.6.2-1ubuntu2.5",
"5.6.2-1ubuntu2.6",
"5.6.2-1ubuntu2.7",
"5.6.2-1ubuntu2.8",
"5.6.2-1ubuntu2.9"
]
}
],
"aliases": [],
"details": "USN-6488-1 fixed a vulnerability in strongSwan. This update provides\nthe corresponding updates for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.\n\nOriginal advisory details:\n\n Florian Picca discovered that strongSwan incorrectly handled certain DH\n public values. A remote attacker could use this issue to cause strongSwan\n to crash, resulting in a denial of service, or possibly execute arbitrary\n code.\n",
"id": "USN-6488-2",
"modified": "2026-06-25T10:46:17Z",
"published": "2023-12-14T21:21:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6488-2"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-41913"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "strongswan vulnerability",
"upstream": [
"UBUNTU-CVE-2023-41913"
]
}
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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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