« Volver al listado

CVE-2015-8806

Estado: ModificadaAlta (7.5)—

dict.c in libxml2 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via an unexpected character immediately after the "<!DOCTYPE html" substring in a crafted HTML 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 (3)

Canonical — Ubuntu LinuxDebian — Debian LinuxXmlsoft — Libxml2

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2015-8806",
  "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": true,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@debian.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2016-04-13T17:59:07.460",
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2016/02/03/5",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/82071",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-2994-1",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "https://bugzilla.gnome.org/show_bug.cgi?id=749115",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "https://security.gentoo.org/glsa/201701-37",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "https://www.debian.org/security/2016/dsa-3593",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2016/02/03/5",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/82071",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-2994-1",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.gnome.org/show_bug.cgi?id=749115",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/201701-37",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.debian.org/security/2016/dsa-3593",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "dict.c in libxml2 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via an unexpected character immediately after the \"<!DOCTYPE html\" substring in a crafted HTML document."
    },
    {
      "lang": "es",
      "value": "dict.c en libxml2 permite a atacantes remotos provocar una denegación de servicio (sobre lectura de buffer basado en memoria dinámica y caída de aplicación) a través de carácter no esperado inmediatamente después de la subcadena \""
    }
  ],
  "lastModified": "2026-06-17T00:35:17.367",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AFAD619E-BF3F-4E56-AF88-5880F939333E",
              "versionEndExcluding": "2.9.4"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8D305F7A-D159-4716-AB26-5E38BB5CD991"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "815D70A8-47D3-459C-A32C-9FEACA0659D1"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E88A537F-F4D0-46B9-9E37-965233C2A355"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@debian.org"
}