fkie_cve-2020-17467
Vulnerability from fkie_nvd
Published
2020-12-11 23:15
Modified
2024-11-21 05:08
Severity ?
Summary
An issue was discovered in FNET through 4.6.4. The code for processing the hostname from an LLMNR request doesn't check for '\0' termination. Therefore, the deduced length of the hostname doesn't reflect the correct length of the actual data. This may lead to Information Disclosure in _fnet_llmnr_poll in fnet_llmnr.c during a response to a malicious request of the DNS class IN.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| cve@mitre.org | http://fnet.sourceforge.net/manual/fnet_history.html | Release Notes, Third Party Advisory | |
| cve@mitre.org | https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 | Third Party Advisory, US Government Resource | |
| cve@mitre.org | https://www.kb.cert.org/vuls/id/815128 | Third Party Advisory, US Government Resource | |
| af854a3a-2127-422b-91ae-364da2661108 | http://fnet.sourceforge.net/manual/fnet_history.html | Release Notes, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 | Third Party Advisory, US Government Resource | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.kb.cert.org/vuls/id/815128 | Third Party Advisory, US Government Resource |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:butok:fnet:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F8E2831C-6C9A-4130-8993-2E5DF9F8F6F3",
"versionEndIncluding": "4.6.4",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An issue was discovered in FNET through 4.6.4. The code for processing the hostname from an LLMNR request doesn\u0027t check for \u0027\\0\u0027 termination. Therefore, the deduced length of the hostname doesn\u0027t reflect the correct length of the actual data. This may lead to Information Disclosure in _fnet_llmnr_poll in fnet_llmnr.c during a response to a malicious request of the DNS class IN."
},
{
"lang": "es",
"value": "Se detect\u00f3 un problema en FNET versiones hasta 4.6.4.\u0026#xa0;El c\u00f3digo para procesar el nombre de host de una petici\u00f3n LLMNR no comprueba la terminaci\u00f3n \u0027\\ 0\u0027.\u0026#xa0;Por lo tanto, la longitud deducida del nombre de host no refleja la longitud correcta de los datos reales.\u0026#xa0;Esto puede conllevar a una divulgaci\u00f3n de informaci\u00f3n en la funci\u00f3n _fnet_llmnr_poll en el archivo fnet_llmnr.c durante una respuesta a una petici\u00f3n maliciosa de la clase de DNS IN"
}
],
"id": "CVE-2020-17467",
"lastModified": "2024-11-21T05:08:10.280",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.4,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.2,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2020-12-11T23:15:13.557",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Release Notes",
"Third Party Advisory"
],
"url": "http://fnet.sourceforge.net/manual/fnet_history.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://www.kb.cert.org/vuls/id/815128"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Release Notes",
"Third Party Advisory"
],
"url": "http://fnet.sourceforge.net/manual/fnet_history.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://www.kb.cert.org/vuls/id/815128"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Loading…
Loading…
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.