FKIE_CVE-2017-16931

Vulnerability from fkie_nvd - Published: 2017-11-23 21:29 - Updated: 2026-06-17 01:10
Severity
9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.
References
cve@mitre.orghttp://xmlsoft.org/news.htmlRelease Notes, Vendor Advisory
cve@mitre.orghttps://bugzilla.gnome.org/show_bug.cgi?id=766956Permissions Required
cve@mitre.orghttps://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3Patch, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2017/11/msg00041.html
cve@mitre.orghttps://www.oracle.com//security-alerts/cpujul2021.html
af854a3a-2127-422b-91ae-364da2661108http://xmlsoft.org/news.htmlRelease Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.gnome.org/show_bug.cgi?id=766956Permissions Required
af854a3a-2127-422b-91ae-364da2661108https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com//security-alerts/cpujul2021.html
Impacted products
Vendor Product Version
xmlsoft libxml2 *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8CC4875D-A4B2-4A7C-B020-7C2E86412B7C",
              "versionEndIncluding": "2.9.4",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a \u0027%\u0027 character in a DTD name."
    },
    {
      "lang": "es",
      "value": "parser.c en libxml2 en versiones anteriores a la 2.9.5 gestiona de manera incorrecta las referencias de entidades de par\u00e1metro debido a que la macro NEXTL llama a la funci\u00f3n xmlParserHandlePEReference en caso de que haya un car\u00e1cter \"%\" en un nombre DTD."
    }
  ],
  "id": "CVE-2017-16931",
  "lastModified": "2026-06-17T01:10:10.027",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": true,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2017-11-23T21:29:00.390",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "http://xmlsoft.org/news.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Permissions Required"
      ],
      "url": "https://bugzilla.gnome.org/show_bug.cgi?id=766956"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Vendor Advisory"
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      "url": "http://xmlsoft.org/news.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://bugzilla.gnome.org/show_bug.cgi?id=766956"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
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      "url": "https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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