CVE-2005-2666 (GCVE-0-2005-2666)
Vulnerability from cvelistv5 – Published: 2005-08-23 04:00 – Updated: 2024-08-07 22:45
VLAI
EPSS
VEX
Summary
SSH, as implemented in OpenSSH before 4.0 and possibly other implementations, stores hostnames, IP addresses, and keys in plaintext in the known_hosts file, which makes it easier for an attacker that has compromised an SSH user's account to generate a list of additional targets that are more likely to have the same password or key.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://oval.cisecurity.org/repository/search/def… | vdb-entrysignaturex_refsource_OVAL |
| http://secunia.com/advisories/25098 | third-party-advisoryx_refsource_SECUNIA |
| http://www.redhat.com/support/errata/RHSA-2007-02… | vendor-advisoryx_refsource_REDHAT |
| http://secunia.com/advisories/19243 | third-party-advisoryx_refsource_SECUNIA |
| http://www.eweek.com/article2/0%2C1759%2C1815795%… | x_refsource_MISC |
| ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-20… | vendor-advisoryx_refsource_SCO |
| http://nms.csail.mit.edu/projects/ssh/ | x_refsource_MISC |
Date Public
2005-05-10 00:00
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"matchCriteriaId": "9039BE91-AF0A-41E7-8F9F-15375890E120",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.3:*:*:*:*:*:*:*",
"matchCriteriaId": "08BCB2EA-DF9D-4853-805B-29FA6274E2B7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.3p1:*:*:*:*:*:*:*",
"matchCriteriaId": "0F93417F-2498-4576-9F5D-B59F77D39669",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.4:*:*:*:*:*:*:*",
"matchCriteriaId": "AF3AB42C-B614-4746-99AD-E94140D91BF3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.4p1:*:*:*:*:*:*:*",
"matchCriteriaId": "458167E5-9BC2-40BE-AC8A-9761A4F19494",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.5:*:*:*:*:*:*:*",
"matchCriteriaId": "3FB9B4C7-4235-4388-8E5D-E72ECCC37A7E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.5p1:*:*:*:*:*:*:*",
"matchCriteriaId": "86ACA0ED-A3D0-48A7-B06F-13709AD23B55",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.6:*:*:*:*:*:*:*",
"matchCriteriaId": "0FEB9262-D05E-4610-9C79-3EDE44AC7C0B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.6.1:*:*:*:*:*:*:*",
"matchCriteriaId": "8176879B-1875-4AC9-B15A-2ABCFCD04F88",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.6.1p1:*:*:*:*:*:*:*",
"matchCriteriaId": "FAA26A12-F96A-4025-BBCA-72B7A3B1E60C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.6.1p2:*:*:*:*:*:*:*",
"matchCriteriaId": "A02751E9-2D38-4495-9572-8D84D71D4773",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.7:*:*:*:*:*:*:*",
"matchCriteriaId": "7A36BEA2-DAE4-423C-8D85-0F6036351F98",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.7.1:*:*:*:*:*:*:*",
"matchCriteriaId": "80DC64F6-FE28-44BA-91D1-EC2DB11B2CFC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.7.1p2:*:*:*:*:*:*:*",
"matchCriteriaId": "44CCF5CD-B434-4392-A79A-C1945D2AE30A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.8:*:*:*:*:*:*:*",
"matchCriteriaId": "AEB456B8-9D8B-4985-858D-6A43FA5EE2E9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.8.1:*:*:*:*:*:*:*",
"matchCriteriaId": "2BD4E0F6-4EEA-4EC7-83E7-FC6F7D2E7A3C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.8.1p1:*:*:*:*:*:*:*",
"matchCriteriaId": "C35F4ABE-1B0C-4195-8F99-BF993A17882B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.9:*:*:*:*:*:*:*",
"matchCriteriaId": "ADC7352D-2916-47F7-A256-F897D763DC9B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.9.1:*:*:*:*:*:*:*",
"matchCriteriaId": "AEC3FC36-B246-4DCB-8984-228525D9A356",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:3.9.1p1:*:*:*:*:*:*:*",
"matchCriteriaId": "BC861000-37D8-4B0F-BFA0-57E9BE125B56",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "SSH, as implemented in OpenSSH before 4.0 and possibly other implementations, stores hostnames, IP addresses, and keys in plaintext in the known_hosts file, which makes it easier for an attacker that has compromised an SSH user\u0027s account to generate a list of additional targets that are more likely to have the same password or key."
}
],
"id": "CVE-2005-2666",
"lastModified": "2026-04-16T00:27:16.627",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "LOW",
"cvssData": {
"accessComplexity": "HIGH",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 1.2,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:H/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 1.9,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2005-08-23T04:00:00.000",
"references": [
{
"source": "cve@mitre.org",
"url": "ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2006.11/SCOSA-2006.11.txt"
},
{
"source": "cve@mitre.org",
"tags": [
"Patch"
],
"url": "http://nms.csail.mit.edu/projects/ssh/"
},
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/19243"
},
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/25098"
},
{
"source": "cve@mitre.org",
"url": "http://www.eweek.com/article2/0%2C1759%2C1815795%2C00.asp"
},
{
"source": "cve@mitre.org",
"url": "http://www.redhat.com/support/errata/RHSA-2007-0257.html"
},
{
"source": "cve@mitre.org",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10201"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2006.11/SCOSA-2006.11.txt"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://nms.csail.mit.edu/projects/ssh/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/19243"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/25098"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.eweek.com/article2/0%2C1759%2C1815795%2C00.asp"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.redhat.com/support/errata/RHSA-2007-0257.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10201"
}
],
"sourceIdentifier": "cve@mitre.org",
"vendorComments": [
{
"comment": "Red Hat is aware of this issue and is tracking it via the following bug:\nhttps://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=162681\n\nThe Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw. More information regarding issue severity can be found here:\nhttp://www.redhat.com/security/updates/classification/\n",
"lastModified": "2006-09-20T00:00:00",
"organization": "Red Hat"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-255"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2025-11-21T13:28:43+00:00",
"cve": "CVE-2005-2666",
"id": "CVE-2005-2666",
"initial_release_date": "2005-07-07T00:00:00+00:00",
"product_status:fixed": "148",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "openssh vulnerable to known_hosts address harvesting",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2005/cve-2005-2666.json",
"version": "3"
}
}
}
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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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