fkie_cve-2017-3204
Vulnerability from fkie_nvd
Published
2017-04-04 14:59
Modified
2025-04-20 01:37
Severity ?
Summary
The Go SSH library (x/crypto/ssh) by default does not verify host keys, facilitating man-in-the-middle attacks. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism.
References
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:golang:crypto:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4C978A0F-3C80-4898-B1B3-DFF7F97D22DF",
"versionEndIncluding": "2017-03-17",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The Go SSH library (x/crypto/ssh) by default does not verify host keys, facilitating man-in-the-middle attacks. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism."
},
{
"lang": "es",
"value": "La librer\u00eda Go SSH (x/crypto/ssh) por defecto no verifica las claves del host, facilitando ataques man-in-the-middle. El comportamiento predeterminado cambi\u00f3 en commit e4e2799 para requerir el registro expl\u00edcito de un mecanismo de verificaci\u00f3n de hostkey."
}
],
"id": "CVE-2017-3204",
"lastModified": "2025-04-20T01:37:25.860",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2017-04-04T14:59:00.180",
"references": [
{
"source": "cret@cert.org",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/97481"
},
{
"source": "cret@cert.org",
"tags": [
"Third Party Advisory"
],
"url": "https://bridge.grumpy-troll.org/2017/04/golang-ssh-security/"
},
{
"source": "cret@cert.org",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991"
},
{
"source": "cret@cert.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/golang/go/issues/19767"
},
{
"source": "cret@cert.org",
"tags": [
"Vendor Advisory"
],
"url": "https://godoc.org/golang.org/x/crypto/ssh"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/97481"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://bridge.grumpy-troll.org/2017/04/golang-ssh-security/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/golang/go/issues/19767"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://godoc.org/golang.org/x/crypto/ssh"
}
],
"sourceIdentifier": "cret@cert.org",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-310"
}
],
"source": "cret@cert.org",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"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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