FKIE_CVE-1999-1231

Vulnerability from fkie_nvd - Published: 1999-06-09 04:00 - Updated: 2025-04-03 01:03
Severity ?
Summary
ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times, but only prompts an invalid user name for a password once, which allows remote attackers to determine user account names on the server.
References
cve@mitre.orghttp://www.securityfocus.com/archive/1/14758Exploit, Patch, Vendor Advisory
cve@mitre.orghttps://exchange.xforce.ibmcloud.com/vulnerabilities/2276
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/14758Exploit, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/2276
Impacted products
Vendor Product Version
ssh ssh2 2.0
ssh ssh2 2.0.1
ssh ssh2 2.0.2
ssh ssh2 2.0.3
ssh ssh2 2.0.4
ssh ssh2 2.0.5
ssh ssh2 2.0.6
ssh ssh2 2.0.7
ssh ssh2 2.0.8
ssh ssh2 2.0.9
ssh ssh2 2.0.10
ssh ssh2 2.0.11
ssh ssh2 2.0.12
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "4A7DB2FA-58A8-45B9-AE2E-AE20A872BF90",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "2DD92EA8-8C01-4E4E-9AFE-2B1242AB10CE",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "6FB31028-59BA-4833-BF14-3CB1CA18DAAC",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "8A3E89B6-872D-4541-A413-88A956FDAE81",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "98CC86ED-CA78-4E2A-8A12-4F766DB79733",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.5:*:*:*:*:*:*:*",
              "matchCriteriaId": "BD500A33-4D0E-44B5-9BBE-A30AA999F662",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "EBB8D72F-51E7-47DF-96A4-4EBB517A79D7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.7:*:*:*:*:*:*:*",
              "matchCriteriaId": "EC2379BA-621E-4986-AAC5-AF359FD57381",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.8:*:*:*:*:*:*:*",
              "matchCriteriaId": "9972B3A4-369E-40B5-9415-F92B7394604A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.9:*:*:*:*:*:*:*",
              "matchCriteriaId": "1B6E719F-010B-4B8A-B508-0491BD15C465",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.10:*:*:*:*:*:*:*",
              "matchCriteriaId": "E44D2AE3-DD8B-46D0-B6AB-9F0E6B4DCC4C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.11:*:*:*:*:*:*:*",
              "matchCriteriaId": "B7735CDD-8BFC-4E30-9C88-27C8943637CA",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ssh:ssh2:2.0.12:*:*:*:*:*:*:*",
              "matchCriteriaId": "A1582187-F4BA-44D6-97F0-E78D814A9E9E",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times, but only prompts an invalid user name for a password once, which allows remote attackers to determine user account names on the server."
    }
  ],
  "id": "CVE-1999-1231",
  "lastModified": "2025-04-03T01:03:51.193",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "1999-06-09T04:00:00.000",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.securityfocus.com/archive/1/14758"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/2276"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.securityfocus.com/archive/1/14758"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/2276"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • 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.
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Detection rules are retrieved from Rulezet.