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CVE-2012-4522

Status: ModifiedMedium (5)—

The rb_get_path_check function in file.c in Ruby 1.9.3 before patchlevel 286 and Ruby 2.0.0 before r37163 allows context-dependent attackers to create files in unexpected locations or with unexpected names via a NUL byte in a file path.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Ruby-lang — Ruby

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2012-4522",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2012-11-24T20:55:03.150",
  "references": [
    {
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090235.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090515.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2013-0129.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=37163",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2012/10/12/6",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2012/10/13/1",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2012/10/16/1",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.ruby-lang.org/en/news/2012/10/12/poisoned-NUL-byte-vulnerability/",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090235.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090515.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2013-0129.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=37163",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2012/10/12/6",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2012/10/13/1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2012/10/16/1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ruby-lang.org/en/news/2012/10/12/poisoned-NUL-byte-vulnerability/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The rb_get_path_check function in file.c in Ruby 1.9.3 before patchlevel 286 and Ruby 2.0.0 before r37163 allows context-dependent attackers to create files in unexpected locations or with unexpected names via a NUL byte in a file path."
    },
    {
      "lang": "es",
      "value": "La función rb_get_path_check en file.c en Ruby v1.9.3 anterior a patchlevel 286 y Ruby v2.0.0  anterior a r37163 permite a atacantes dependientes de contexto crear archivos en ubicaciones inesperadas o con nombres inesperados a través de un byte NUL en una ruta de archivo."
    }
  ],
  "lastModified": "2026-06-16T23:45:15.250",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ruby-lang:ruby:1.9.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D0535DC9-EB0E-4745-80AC-4A020DF26E38"
            },
            {
              "criteria": "cpe:2.3:a:ruby-lang:ruby:2.0.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B03B7561-A854-4EFA-9E4E-CFC4EEAE4EE1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}