FKIE_CVE-2011-4587

Vulnerability from fkie_nvd - Published: 2012-07-20 10:40 - Updated: 2026-06-16 23:35
Severity
Summary
lib/moodlelib.php in Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, and 2.1.x before 2.1.3 does not properly handle certain zero values in the password policy, which makes it easier for remote attackers to obtain access by leveraging the possible existence of user accounts that have unchangeable blank passwords.
References
secalert@redhat.comhttp://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=e079e82c087becf06d902089d14f3f76686bde19
secalert@redhat.comhttp://moodle.org/mod/forum/discuss.php?d=191755Vendor Advisory
secalert@redhat.comhttp://www.debian.org/security/2012/dsa-2421
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=761248
af854a3a-2127-422b-91ae-364da2661108http://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=e079e82c087becf06d902089d14f3f76686bde19
af854a3a-2127-422b-91ae-364da2661108http://moodle.org/mod/forum/discuss.php?d=191755Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2012/dsa-2421
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=761248
Impacted products
Vendor Product Version
moodle moodle 1.9.1
moodle moodle 1.9.2
moodle moodle 1.9.3
moodle moodle 1.9.4
moodle moodle 1.9.5
moodle moodle 1.9.6
moodle moodle 1.9.7
moodle moodle 1.9.8
moodle moodle 1.9.9
moodle moodle 1.9.10
moodle moodle 1.9.11
moodle moodle 1.9.12
moodle moodle 1.9.13
moodle moodle 1.9.14
moodle moodle 2.0.0
moodle moodle 2.0.1
moodle moodle 2.0.2
moodle moodle 2.0.3
moodle moodle 2.0.4
moodle moodle 2.0.5
moodle moodle 2.1.0
moodle moodle 2.1.1
moodle moodle 2.1.2
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "24F2602B-8ED3-4026-A9A4-31BE8BDC7724",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "D7F24649-B67F-4809-9F54-7B623AEF5A4A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "6B81655E-C3B5-4115-A4C4-B7AC2FCDAB7F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "ED9C3840-66BE-47EC-9F0C-E9D2171FF0B2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.5:*:*:*:*:*:*:*",
              "matchCriteriaId": "DBD062EB-1B1F-4DC8-A4F9-C2EC7D401E9D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "291F73E9-1059-4E7F-860F-0DF2A35AA456",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.7:*:*:*:*:*:*:*",
              "matchCriteriaId": "0EB5859E-0996-46B5-BB44-34BD6EACBCF5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.8:*:*:*:*:*:*:*",
              "matchCriteriaId": "F87F6707-99AB-478A-909D-1D87298D5514",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.9:*:*:*:*:*:*:*",
              "matchCriteriaId": "4BCE8B26-58BB-471C-B291-E6AE22B96C5B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.10:*:*:*:*:*:*:*",
              "matchCriteriaId": "768CE5AF-955B-4148-998A-A46BBDBA618B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.11:*:*:*:*:*:*:*",
              "matchCriteriaId": "4283440F-9B21-4CE9-81FF-79DF3DEDCEE7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.12:*:*:*:*:*:*:*",
              "matchCriteriaId": "A989FADA-89C3-472B-86BF-0630D1CBBCA8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.13:*:*:*:*:*:*:*",
              "matchCriteriaId": "4FAF84CB-46F1-4F37-BBAC-1CED0600B5B0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:1.9.14:*:*:*:*:*:*:*",
              "matchCriteriaId": "8FCA633D-E6CA-4D38-937B-9F83179CDAEA",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:2.0.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DD248A1D-CACC-4E76-925A-078B736442AE",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:2.0.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "9B8A0403-0869-495F-B7C0-13A387549C7A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:2.0.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "39791F43-CF89-485B-AA8B-634C282BB025",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:2.0.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "428E4846-8C9E-4592-8437-88FCDCED704D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:2.0.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "A4096977-3258-48B0-9C7B-D43FBC8BB1EA",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:2.0.5:*:*:*:*:*:*:*",
              "matchCriteriaId": "448E5353-CD0E-407C-84F4-5E6D014A28FE",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:2.1.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "18C6F348-DAE9-4440-8B3A-8D92ADC6606F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:2.1.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "367537BF-CBDF-4CBB-91B4-6E5A567EF605",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:2.1.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "DABBF325-C48A-4838-AC5D-0565C78976CD",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "lib/moodlelib.php in Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, and 2.1.x before 2.1.3 does not properly handle certain zero values in the password policy, which makes it easier for remote attackers to obtain access by leveraging the possible existence of user accounts that have unchangeable blank passwords."
    },
    {
      "lang": "es",
      "value": "lib/moodlelib.php en Moodle v1.9.x antes de v1.9.15, v2.0.x antes de v2.0.6 y v2.1.x antes de v2.1.3 no maneja adecuadamente ciertos valores de cero en la pol\u00edtica de contrase\u00f1as, lo que hace que sea m\u00e1s f\u00e1cil para los atacantes remotos a la hora de obtener acceso aprovech\u00e1ndose de la posible existencia de cuentas de usuario con contrase\u00f1as en blanco.\r\n"
    }
  ],
  "id": "CVE-2011-4587",
  "lastModified": "2026-06-16T23:35:05.830",
  "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
      }
    ]
  },
  "published": "2012-07-20T10:40:35.970",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "http://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=e079e82c087becf06d902089d14f3f76686bde19"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://moodle.org/mod/forum/discuss.php?d=191755"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.debian.org/security/2012/dsa-2421"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=761248"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=e079e82c087becf06d902089d14f3f76686bde19"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://moodle.org/mod/forum/discuss.php?d=191755"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2012/dsa-2421"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=761248"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-255"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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