FKIE_CVE-2021-25094

Vulnerability from fkie_nvd - Published: 2022-04-25 16:16 - Updated: 2026-06-17 03:41
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
The Tatsu WordPress plugin before 3.3.12 add_custom_font action can be used without prior authentication to upload a rogue zip file which is uncompressed under the WordPress's upload directory. By adding a PHP shell with a filename starting with a dot ".", this can bypass extension control implemented in the plugin. Moreover, there is a race condition in the zip extraction process which makes the shell file live long enough on the filesystem to be callable by an attacker.
References
contact@wpscan.comhttp://packetstormsecurity.com/files/167190/WordPress-Tatsu-Builder-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
contact@wpscan.comhttps://darkpills.com/wordpress-tatsu-builder-preauth-rce-cve-2021-25094/Exploit, Third Party Advisory
contact@wpscan.comhttps://wpscan.com/vulnerability/fb0097a0-5d7b-4e5b-97de-aacafa8fffcdExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/167190/WordPress-Tatsu-Builder-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://darkpills.com/wordpress-tatsu-builder-preauth-rce-cve-2021-25094/Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://packetstorm.news/files/id/190566/
af854a3a-2127-422b-91ae-364da2661108https://wpscan.com/vulnerability/fb0097a0-5d7b-4e5b-97de-aacafa8fffcdExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/52260
Impacted products
Vendor Product Version
brandexponents tatsu *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Tatsu",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "3.3.12",
              "status": "affected",
              "version": "3.3.12",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "contact@wpscan.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:brandexponents:tatsu:*:*:*:*:*:wordpress:*:*",
              "matchCriteriaId": "8D511D12-942F-414C-91E0-3C1666DB515B",
              "versionEndExcluding": "3.3.12",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Tatsu WordPress plugin before 3.3.12 add_custom_font action can be used without prior authentication to upload a rogue zip file which is uncompressed under the WordPress\u0027s upload directory. By adding a PHP shell with a filename starting with a dot \".\", this can bypass extension control implemented in the plugin. Moreover, there is a race condition in the zip extraction process which makes the shell file live long enough on the filesystem to be callable by an attacker."
    },
    {
      "lang": "es",
      "value": "La acci\u00f3n add_custom_font del plugin Tatsu de WordPress versiones anteriores a 3.3.12, puede ser usada sin autenticaci\u00f3n previa para subir un archivo zip falso que est\u00e1 descomprimido en el directorio de subida de WordPress. Al a\u00f1adir un shell PHP con un nombre de archivo que comienza con un punto \".\", esto puede omitir el control de extensi\u00f3n implementado en el plugin. Adem\u00e1s, se presenta una condici\u00f3n de carrera en el proceso de extracci\u00f3n del zip que hace que el archivo shell viva el tiempo suficiente en el sistema de archivos para ser llamado por un atacante"
    }
  ],
  "id": "CVE-2021-25094",
  "lastModified": "2026-06-17T03:41:27.090",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2022-04-25T16:16:07.117",
  "references": [
    {
      "source": "contact@wpscan.com",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/167190/WordPress-Tatsu-Builder-Remote-Code-Execution.html"
    },
    {
      "source": "contact@wpscan.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://darkpills.com/wordpress-tatsu-builder-preauth-rce-cve-2021-25094/"
    },
    {
      "source": "contact@wpscan.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://wpscan.com/vulnerability/fb0097a0-5d7b-4e5b-97de-aacafa8fffcd"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/167190/WordPress-Tatsu-Builder-Remote-Code-Execution.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://darkpills.com/wordpress-tatsu-builder-preauth-rce-cve-2021-25094/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://packetstorm.news/files/id/190566/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://wpscan.com/vulnerability/fb0097a0-5d7b-4e5b-97de-aacafa8fffcd"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.exploit-db.com/exploits/52260"
    }
  ],
  "sourceIdentifier": "contact@wpscan.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "contact@wpscan.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Secondary"
    }
  ]
}



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