fkie_cve-2021-4234
Vulnerability from fkie_nvd
Published
2022-07-06 20:15
Modified
2024-11-21 06:37
Severity ?
Summary
OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| security@openvpn.net | https://openvpn.net/vpn-server-resources/release-notes/#openvpn-access-server-2-11-0 | Release Notes, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://openvpn.net/vpn-server-resources/release-notes/#openvpn-access-server-2-11-0 | Release Notes, Vendor Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| openvpn | openvpn_access_server | * |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F315C5F8-CF55-4561-87FA-09A49636FDCB",
"versionEndExcluding": "2.11.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack."
},
{
"lang": "es",
"value": "OpenVPN Access Server versiones 2.10 y versiones anteriores, son susceptibles de reenviar m\u00faltiples paquetes en respuesta a un paquete de reinicio enviado desde el cliente al que \u00e9ste no responde de nuevo, resultando en un ataque de amplificaci\u00f3n limitada"
}
],
"id": "CVE-2021-4234",
"lastModified": "2024-11-21T06:37:12.167",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2022-07-06T20:15:08.127",
"references": [
{
"source": "security@openvpn.net",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://openvpn.net/vpn-server-resources/release-notes/#openvpn-access-server-2-11-0"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://openvpn.net/vpn-server-resources/release-notes/#openvpn-access-server-2-11-0"
}
],
"sourceIdentifier": "security@openvpn.net",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-406"
}
],
"source": "security@openvpn.net",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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