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CVE-2011-0721

Estado: ModificadaMedia (6.4)—

Multiple CRLF injection vulnerabilities in (1) chfn and (2) chsh in shadow 1:4.1.4 allow local users to add new users or groups to /etc/passwd via the GECOS field.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Debian — Shadow

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2011-0721",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "security@ubuntu.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2011-02-19T01:00:03.353",
  "references": [
    {
      "url": "http://osvdb.org/70895",
      "source": "security@ubuntu.com"
    },
    {
      "url": "http://secunia.com/advisories/42505",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@ubuntu.com"
    },
    {
      "url": "http://secunia.com/advisories/43345",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@ubuntu.com"
    },
    {
      "url": "http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.380014",
      "source": "security@ubuntu.com"
    },
    {
      "url": "http://www.debian.org/security/2011/dsa-2164",
      "source": "security@ubuntu.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/46426",
      "source": "security@ubuntu.com"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-1065-1",
      "source": "security@ubuntu.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2011/0396",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@ubuntu.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2011/0398",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@ubuntu.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2011/0773",
      "source": "security@ubuntu.com"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65564",
      "source": "security@ubuntu.com"
    },
    {
      "url": "http://osvdb.org/70895",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/42505",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/43345",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.380014",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2011/dsa-2164",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/46426",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-1065-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2011/0396",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2011/0398",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2011/0773",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65564",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple CRLF injection vulnerabilities in (1) chfn and (2) chsh in shadow 1:4.1.4 allow local users to add new users or groups to /etc/passwd via the GECOS field."
    },
    {
      "lang": "es",
      "value": "Múltiples vulnerabilidades de inyección CRLF en (1) chfn y (2) chsh sobre shadow 1:4.1.4 permiten agregar nuevos usuarios o grupos a /etc/passwd a los usuarios locales a través del campo GECOS."
    }
  ],
  "lastModified": "2026-06-16T23:27:56.927",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:debian:shadow:1\\:4.1.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "021D4066-989E-4B2C-93B2-65748E24E257"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@ubuntu.com"
}