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CVE-2012-2921

Estado: ModificadaMedia (5)—

Universal Feed Parser (aka feedparser or python-feedparser) before 5.1.2 allows remote attackers to cause a denial of service (memory consumption) via a crafted XML ENTITY declaration in a non-ASCII encoded document.

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)

Mark Pilgrim — Feedparser

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2012-2921",
  "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:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2012-05-21T22:55:01.303",
  "references": [
    {
      "url": "http://freecode.com/projects/feedparser/releases/344371",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://osvdb.org/81701",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/49256",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2013:118",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/53654",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://code.google.com/p/feedparser/source/browse/trunk/NEWS?spec=svn706&r=706",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://code.google.com/p/feedparser/source/detail?r=703&path=/trunk/feedparser/feedparser.py",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0157",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://freecode.com/projects/feedparser/releases/344371",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://osvdb.org/81701",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/49256",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2013:118",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/53654",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://code.google.com/p/feedparser/source/browse/trunk/NEWS?spec=svn706&r=706",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://code.google.com/p/feedparser/source/detail?r=703&path=/trunk/feedparser/feedparser.py",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0157",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Universal Feed Parser (aka feedparser or python-feedparser) before 5.1.2 allows remote attackers to cause a denial of service (memory consumption) via a crafted XML ENTITY declaration in a non-ASCII encoded document."
    },
    {
      "lang": "es",
      "value": "Universal Feed Parser (feedparser or python-feedparser) en versiones anteriores a la 5.1.2 permite a atacantes remotos provocar una denegación de servicio (agotamiento de la memoria) a través de una declaración XML ENTITY modificada en un documento no codificado en ASCII."
    }
  ],
  "lastModified": "2026-06-16T23:42:21.420",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
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              "vulnerable": true,
              "matchCriteriaId": "848490D5-C504-46F4-B191-29E3A4F54783",
              "versionEndIncluding": "5.1.1"
            },
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              "vulnerable": true,
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            },
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              "vulnerable": true,
              "matchCriteriaId": "26821F56-74B7-40F2-831E-51F31E09820E"
            },
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              "vulnerable": true,
              "matchCriteriaId": "53E534A3-B856-4D06-9DF7-4C1693C960A7"
            },
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            },
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              "matchCriteriaId": "F51660B8-24D3-40EF-AAC9-AB57B12F8B5A"
            },
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              "matchCriteriaId": "598605D2-7141-4624-BE81-9BDA97DD81E2"
            },
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            },
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              "matchCriteriaId": "38CBB532-115E-47E6-B96A-60996CC12DE0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}