fkie_cve-2011-2495
Vulnerability from fkie_nvd
Published
2012-06-13 10:24
Modified
2025-04-11 00:51
Severity ?
Summary
fs/proc/base.c in the Linux kernel before 2.6.39.4 does not properly restrict access to /proc/#####/io files, which allows local users to obtain sensitive I/O statistics by polling a file, as demonstrated by discovering the length of another user's password.
Impacted products



{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "94597E40-EA22-414E-BF5A-A4664E943F09",
              "versionEndIncluding": "2.6.39.3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:*:*:*:*:*:*:*",
              "matchCriteriaId": "EAAF54BC-6282-492F-BA52-8792223320ED",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "2493C2FB-2BA1-4DB3-BC04-E282C9CD399D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "18DBC8AF-18ED-4879-8888-23022E494D14",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "75EB375B-8ADF-4EAB-A3FB-ED5D35E5E719",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "D49BB231-622E-4F20-97C8-E6289933912C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc5:*:*:*:*:*:*",
              "matchCriteriaId": "2D6859AA-DA7F-4AF9-8443-05962171D6E3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc6:*:*:*:*:*:*",
              "matchCriteriaId": "9B79A89D-F048-48C5-B148-4B38A6C3953B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc7:*:*:*:*:*:*",
              "matchCriteriaId": "BEBA9217-9105-4BA3-BE1E-FE387FECEF87",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "1713DDF4-33F1-4716-84D7-FCFECCF9BCCA",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "ABCE5879-317D-4A33-B6DA-A9ACF553F8E9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "fs/proc/base.c in the Linux kernel before 2.6.39.4 does not properly restrict access to /proc/#####/io files, which allows local users to obtain sensitive I/O statistics by polling a file, as demonstrated by discovering the length of another user\u0027s password."
    },
    {
      "lang": "es",
      "value": "fs/proc/base.c del kernel de Linux en versiones anteriores a la 2.6.39.4 no restringe el acceso apropiadamente a los archivos /proc/#####/io, lo que facilita a usuarios locales obtener estad\u00edsticas sobre I/O confidenciales consultando un archivo, como se ha demostrado descubriendo la lengitud de la contrase\u00f1a de otro usuario."
    }
  ],
  "id": "CVE-2011-2495",
  "lastModified": "2025-04-11T00:51:21.963",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.1,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2012-06-13T10:24:55.827",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d1221f375c94ef961ba8574ac4f85c8870ddd51"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://rhn.redhat.com/errata/RHSA-2011-1212.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.openwall.com/lists/oss-security/2011/06/27/1"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=716825"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Exploit",
        "Patch"
      ],
      "url": "https://github.com/torvalds/linux/commit/1d1221f375c94ef961ba8574ac4f85c8870ddd51"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d1221f375c94ef961ba8574ac4f85c8870ddd51"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://rhn.redhat.com/errata/RHSA-2011-1212.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2011/06/27/1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=716825"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Patch"
      ],
      "url": "https://github.com/torvalds/linux/commit/1d1221f375c94ef961ba8574ac4f85c8870ddd51"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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