FKIE_CVE-2018-20148

Vulnerability from fkie_nvd - Published: 2018-12-14 20:29 - Updated: 2026-06-17 01:52
Severity
9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call. This is caused by mishandling of serialized data at phar:// URLs in the wp_get_attachment_thumb_file function in wp-includes/post.php.
References
cve@mitre.orghttp://www.securityfocus.com/bid/106220Third Party Advisory, VDB Entry
cve@mitre.orghttps://blog.secarma.co.uk/labs/near-phar-dangerous-unserialization-wherever-you-areExploit, Third Party Advisory
cve@mitre.orghttps://codex.wordpress.org/Version_4.9.9Product, Vendor Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2019/02/msg00019.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/Release Notes, Vendor Advisory
cve@mitre.orghttps://wordpress.org/support/wordpress-version/version-5-0-1/Release Notes, Vendor Advisory
cve@mitre.orghttps://wpvulndb.com/vulnerabilities/9171Vendor Advisory
cve@mitre.orghttps://www.debian.org/security/2019/dsa-4401Third Party Advisory
cve@mitre.orghttps://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/Press/Media Coverage, Third Party Advisory
cve@mitre.orghttps://www.zdnet.com/article/wordpress-vulnerability-affects-a-third-of-most-popular-websites-online/Press/Media Coverage, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/106220Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://blog.secarma.co.uk/labs/near-phar-dangerous-unserialization-wherever-you-areExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://codex.wordpress.org/Version_4.9.9Product, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/02/msg00019.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://wordpress.org/support/wordpress-version/version-5-0-1/Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://wpvulndb.com/vulnerabilities/9171Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2019/dsa-4401Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/Press/Media Coverage, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.zdnet.com/article/wordpress-vulnerability-affects-a-third-of-most-popular-websites-online/Press/Media Coverage, Third Party Advisory
Impacted products
Vendor Product Version
wordpress wordpress *
wordpress wordpress *
debian debian_linux 8.0
debian debian_linux 9.0
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:wordpress:wordpress:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CEEA870E-2BB4-4720-A3D9-1FFBA5596D94",
              "versionEndExcluding": "4.9.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5CCEB112-4070-4BB4-8974-C289FAF79E79",
              "versionEndExcluding": "5.0.1",
              "versionStartIncluding": "5.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call. This is caused by mishandling of serialized data at phar:// URLs in the wp_get_attachment_thumb_file function in wp-includes/post.php."
    },
    {
      "lang": "es",
      "value": "En WordPress, en versiones anteriores a la 4.9.9 y versiones 5.x anteriores a la 5.0.1, los contribuyentes pueden llevar a cabo ataques de inyecci\u00f3n de objetos PHP mediante metadatos manipulados en una llamada wp.getMediaItem. Esto viene provocado por la gesti\u00f3n incorrecta de datos serializados en URL phar:// en la funci\u00f3n wp_get_attachment_thumb_file en wp-includes/post.php."
    }
  ],
  "id": "CVE-2018-20148",
  "lastModified": "2026-06-17T01:52:20.737",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "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": "2018-12-14T20:29:00.390",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/106220"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://blog.secarma.co.uk/labs/near-phar-dangerous-unserialization-wherever-you-are"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Product",
        "Vendor Advisory"
      ],
      "url": "https://codex.wordpress.org/Version_4.9.9"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2019/02/msg00019.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://wordpress.org/support/wordpress-version/version-5-0-1/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://wpvulndb.com/vulnerabilities/9171"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2019/dsa-4401"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Press/Media Coverage",
        "Third Party Advisory"
      ],
      "url": "https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Press/Media Coverage",
        "Third Party Advisory"
      ],
      "url": "https://www.zdnet.com/article/wordpress-vulnerability-affects-a-third-of-most-popular-websites-online/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/106220"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://blog.secarma.co.uk/labs/near-phar-dangerous-unserialization-wherever-you-are"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Product",
        "Vendor Advisory"
      ],
      "url": "https://codex.wordpress.org/Version_4.9.9"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2019/02/msg00019.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://wordpress.org/support/wordpress-version/version-5-0-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://wpvulndb.com/vulnerabilities/9171"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2019/dsa-4401"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Press/Media Coverage",
        "Third Party Advisory"
      ],
      "url": "https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Press/Media Coverage",
        "Third Party Advisory"
      ],
      "url": "https://www.zdnet.com/article/wordpress-vulnerability-affects-a-third-of-most-popular-websites-online/"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.