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FKIE_CVE-2005-2666

Vulnerability from fkie_nvd - Published: 2005-08-23 04:00 - Updated: 2026-06-16 22:15
Severity
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.
References
cve@mitre.orgftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2006.11/SCOSA-2006.11.txt
cve@mitre.orghttp://nms.csail.mit.edu/projects/ssh/Patch
cve@mitre.orghttp://secunia.com/advisories/19243
cve@mitre.orghttp://secunia.com/advisories/25098
cve@mitre.orghttp://www.eweek.com/article2/0%2C1759%2C1815795%2C00.asp
cve@mitre.orghttp://www.redhat.com/support/errata/RHSA-2007-0257.html
cve@mitre.orghttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10201
af854a3a-2127-422b-91ae-364da2661108ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2006.11/SCOSA-2006.11.txt
af854a3a-2127-422b-91ae-364da2661108http://nms.csail.mit.edu/projects/ssh/Patch
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/19243
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/25098
af854a3a-2127-422b-91ae-364da2661108http://www.eweek.com/article2/0%2C1759%2C1815795%2C00.asp
af854a3a-2127-422b-91ae-364da2661108http://www.redhat.com/support/errata/RHSA-2007-0257.html
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10201
Impacted products
Vendor Product Version
openbsd openssh 3.0
openbsd openssh 3.0.1
openbsd openssh 3.0.1p1
openbsd openssh 3.0.2
openbsd openssh 3.0.2p1
openbsd openssh 3.0p1
openbsd openssh 3.1
openbsd openssh 3.1p1
openbsd openssh 3.2
openbsd openssh 3.2.2p1
openbsd openssh 3.2.3p1
openbsd openssh 3.3
openbsd openssh 3.3p1
openbsd openssh 3.4
openbsd openssh 3.4p1
openbsd openssh 3.5
openbsd openssh 3.5p1
openbsd openssh 3.6
openbsd openssh 3.6.1
openbsd openssh 3.6.1p1
openbsd openssh 3.6.1p2
openbsd openssh 3.7
openbsd openssh 3.7.1
openbsd openssh 3.7.1p2
openbsd openssh 3.8
openbsd openssh 3.8.1
openbsd openssh 3.8.1p1
openbsd openssh 3.9
openbsd openssh 3.9.1
openbsd openssh 3.9.1p1
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
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          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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      "source": "cve@mitre.org"
    }
  ],
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  "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": "2026-06-16T22:15:26.130",
  "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": [
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      ],
      "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"
    }
  ]
}



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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.


Detection rules are retrieved from Rulezet.


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.