GHSA-2r6j-862c-m2v2high8.6

Unrestricted File Upload in Form Framework

The advisory, in context

Problem

Due to the lack of ensuring file extensions belong to configured allowed mime-types, attackers can upload arbitrary data with arbitrary file extensions - however, default fileDenyPattern successfully blocked files like .htaccess or malicious.php.

TYPO3 Extbase extensions, which implement a file upload and do not implement a custom TypeConverter to transform uploaded files into FileReference domain model objects are affected by the vulnerability as well, since the UploadedFileReferenceConverter of ext:form handles the file upload and will accept files of any mime-type which are persisted to the default location.

In any way, uploaded files are placed in the default location /fileadmin/user_upload/, in most scenarios keeping the submitted filename - which allows attackers to directly reference files, or even correctly guess filenames used by other individuals, disclosing this information.

No authentication is required to exploit this vulnerability.

Solution

Update to TYPO3 versions 8.7.40, 9.5.25, 10.4.14, 11.1.1 that fix the problem described.

Type converter UploadedFileReferenceConverter is not registered globally anymore and just handles uploaded files within the scope of the Form Framework. Guessable storage location has changed from /fileadmin/user_upload/form_<random-hash>/ to /fileadmin/form_uploads/<random-40-bit>. Allowed mime-types must match expected file extensions (e.g. application/pdf must be .pdf, and cannot be .html).

Extbase extensions, who rely on the global availability of the UploadedFileReferenceConverter must now implement a custom TypeConverter to handle file uploads or explicitly implement the ext:form UploadedFileReferenceConverter with appropriate setting for accepted mime-types.

Credits

Thanks to Sebastian Michaelsen, Marc Lindemann, Oliver Eglseder, Markus Volkmer, Jakob Kunzmann, Johannes Regner, Richie Lee who reported this issue, and to TYPO3 core & security team members Oliver Hader & Benni Mack, as well as TYPO3 contributor Ralf Zimmermann who fixed the issue.

References

TYPO3-CORE-SA-2021-002

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

typo3/cms-form Packagist

Ecosystem versions

From 8.0.0 before 8.7.40

Fixed in 8.7.40

26 explicitly affected versions

v8.7.10, v8.7.11, v8.7.12, v8.7.13, v8.7.14, v8.7.15, v8.7.16, v8.7.17, v8.7.18, v8.7.19, v8.7.20, v8.7.21, v8.7.22, v8.7.23, v8.7.24, v8.7.25, v8.7.26, v8.7.27, v8.7.28, v8.7.29, v8.7.30, v8.7.31, v8.7.32, v8.7.7, v8.7.8, v8.7.9

View affected-version evidence

{
  "ranges": [
    {
      "events": [
        {
          "introduced": "8.0.0"
        },
        {
          "fixed": "8.7.40"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v8.7.10",
    "v8.7.11",
    "v8.7.12",
    "v8.7.13",
    "v8.7.14",
    "v8.7.15",
    "v8.7.16",
    "v8.7.17",
    "v8.7.18",
    "v8.7.19",
    "v8.7.20",
    "v8.7.21",
    "v8.7.22",
    "v8.7.23",
    "v8.7.24",
    "v8.7.25",
    "v8.7.26",
    "v8.7.27",
    "v8.7.28",
    "v8.7.29",
    "v8.7.30",
    "v8.7.31",
    "v8.7.32",
    "v8.7.7",
    "v8.7.8",
    "v8.7.9"
  ]
}

typo3/cms-form Packagist

Ecosystem versions

From 9.0.0 before 9.5.25

Fixed in 9.5.25

34 explicitly affected versions

v9.0.0, v9.1.0, v9.2.0, v9.2.1, v9.3.0, v9.3.1, v9.3.2, v9.3.3, v9.4.0, v9.5.0, v9.5.1, v9.5.10, v9.5.11, v9.5.12, v9.5.13, v9.5.14, v9.5.15, v9.5.16, v9.5.17, v9.5.18, v9.5.19, v9.5.2, v9.5.20, v9.5.21, v9.5.22, v9.5.23, v9.5.24, v9.5.3, v9.5.4, v9.5.5, v9.5.6, v9.5.7, v9.5.8, v9.5.9

View affected-version evidence

{
  "ranges": [
    {
      "events": [
        {
          "introduced": "9.0.0"
        },
        {
          "fixed": "9.5.25"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v9.0.0",
    "v9.1.0",
    "v9.2.0",
    "v9.2.1",
    "v9.3.0",
    "v9.3.1",
    "v9.3.2",
    "v9.3.3",
    "v9.4.0",
    "v9.5.0",
    "v9.5.1",
    "v9.5.10",
    "v9.5.11",
    "v9.5.12",
    "v9.5.13",
    "v9.5.14",
    "v9.5.15",
    "v9.5.16",
    "v9.5.17",
    "v9.5.18",
    "v9.5.19",
    "v9.5.2",
    "v9.5.20",
    "v9.5.21",
    "v9.5.22",
    "v9.5.23",
    "v9.5.24",
    "v9.5.3",
    "v9.5.4",
    "v9.5.5",
    "v9.5.6",
    "v9.5.7",
    "v9.5.8",
    "v9.5.9"
  ]
}

typo3/cms-form Packagist

Ecosystem versions

From 10.0.0 before 10.4.14

Fixed in 10.4.14

20 explicitly affected versions

v10.0.0, v10.1.0, v10.2.0, v10.2.1, v10.2.2, v10.3.0, v10.4.0, v10.4.1, v10.4.10, v10.4.11, v10.4.12, v10.4.13, v10.4.2, v10.4.3, v10.4.4, v10.4.5, v10.4.6, v10.4.7, v10.4.8, v10.4.9

View affected-version evidence

{
  "ranges": [
    {
      "events": [
        {
          "introduced": "10.0.0"
        },
        {
          "fixed": "10.4.14"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v10.0.0",
    "v10.1.0",
    "v10.2.0",
    "v10.2.1",
    "v10.2.2",
    "v10.3.0",
    "v10.4.0",
    "v10.4.1",
    "v10.4.10",
    "v10.4.11",
    "v10.4.12",
    "v10.4.13",
    "v10.4.2",
    "v10.4.3",
    "v10.4.4",
    "v10.4.5",
    "v10.4.6",
    "v10.4.7",
    "v10.4.8",
    "v10.4.9"
  ]
}

typo3/cms-form Packagist

Ecosystem versions

From 11.0.0 before 11.1.1

Fixed in 11.1.1

2 explicitly affected versions

v11.0.0, v11.1.0

View affected-version evidence

{
  "ranges": [
    {
      "events": [
        {
          "introduced": "11.0.0"
        },
        {
          "fixed": "11.1.1"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v11.0.0",
    "v11.1.0"
  ]
}

typo3/cms-core Packagist

Ecosystem versions

From 10.0.0 before 10.4.14

Fixed in 10.4.14

20 explicitly affected versions

v10.0.0, v10.1.0, v10.2.0, v10.2.1, v10.2.2, v10.3.0, v10.4.0, v10.4.1, v10.4.10, v10.4.11, v10.4.12, v10.4.13, v10.4.2, v10.4.3, v10.4.4, v10.4.5, v10.4.6, v10.4.7, v10.4.8, v10.4.9

View affected-version evidence

{
  "ranges": [
    {
      "events": [
        {
          "introduced": "10.0.0"
        },
        {
          "fixed": "10.4.14"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v10.0.0",
    "v10.1.0",
    "v10.2.0",
    "v10.2.1",
    "v10.2.2",
    "v10.3.0",
    "v10.4.0",
    "v10.4.1",
    "v10.4.10",
    "v10.4.11",
    "v10.4.12",
    "v10.4.13",
    "v10.4.2",
    "v10.4.3",
    "v10.4.4",
    "v10.4.5",
    "v10.4.6",
    "v10.4.7",
    "v10.4.8",
    "v10.4.9"
  ]
}

typo3/cms-core Packagist

Ecosystem versions

From 11.0.0 before 11.1.1

Fixed in 11.1.1

2 explicitly affected versions

v11.0.0, v11.1.0

View affected-version evidence

{
  "ranges": [
    {
      "events": [
        {
          "introduced": "11.0.0"
        },
        {
          "fixed": "11.1.1"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v11.0.0",
    "v11.1.0"
  ]
}

typo3/cms-core Packagist

Ecosystem versions

From 9.0.0 before 9.5.25

Fixed in 9.5.25

34 explicitly affected versions

View affected-version evidence

{
  "ranges": [
    {
      "events": [
        {
          "introduced": "9.0.0"
        },
        {
          "fixed": "9.5.25"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v9.0.0",
    "v9.1.0",
    "v9.2.0",
    "v9.2.1",
    "v9.3.0",
    "v9.3.1",
    "v9.3.2",
    "v9.3.3",
    "v9.4.0",
    "v9.5.0",
    "v9.5.1",
    "v9.5.10",
    "v9.5.11",
    "v9.5.12",
    "v9.5.13",
    "v9.5.14",
    "v9.5.15",
    "v9.5.16",
    "v9.5.17",
    "v9.5.18",
    "v9.5.19",
    "v9.5.2",
    "v9.5.20",
    "v9.5.21",
    "v9.5.22",
    "v9.5.23",
    "v9.5.24",
    "v9.5.3",
    "v9.5.4",
    "v9.5.5",
    "v9.5.6",
    "v9.5.7",
    "v9.5.8",
    "v9.5.9"
  ]
}

typo3/cms Packagist

Ecosystem versions

From 10.0.0 before 10.4.14

Fixed in 10.4.14

20 explicitly affected versions

v10.0.0, v10.1.0, v10.2.0, v10.2.1, v10.2.2, v10.3.0, v10.4.0, v10.4.1, v10.4.10, v10.4.11, v10.4.12, v10.4.13, v10.4.2, v10.4.3, v10.4.4, v10.4.5, v10.4.6, v10.4.7, v10.4.8, v10.4.9

View affected-version evidence

{
  "ranges": [
    {
      "events": [
        {
          "introduced": "10.0.0"
        },
        {
          "fixed": "10.4.14"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v10.0.0",
    "v10.1.0",
    "v10.2.0",
    "v10.2.1",
    "v10.2.2",
    "v10.3.0",
    "v10.4.0",
    "v10.4.1",
    "v10.4.10",
    "v10.4.11",
    "v10.4.12",
    "v10.4.13",
    "v10.4.2",
    "v10.4.3",
    "v10.4.4",
    "v10.4.5",
    "v10.4.6",
    "v10.4.7",
    "v10.4.8",
    "v10.4.9"
  ]
}

typo3/cms Packagist

Ecosystem versions

From 11.0.0 before 11.1.1

Fixed in 11.1.1

2 explicitly affected versions

v11.0.0, v11.1.0

View affected-version evidence

{
  "ranges": [
    {
      "events": [
        {
          "introduced": "11.0.0"
        },
        {
          "fixed": "11.1.1"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v11.0.0",
    "v11.1.0"
  ]
}

typo3/cms Packagist

Ecosystem versions

From 9.0.0 before 9.5.25

Fixed in 9.5.25

34 explicitly affected versions

View affected-version evidence

{
  "ranges": [
    {
      "events": [
        {
          "introduced": "9.0.0"
        },
        {
          "fixed": "9.5.25"
        }
      ],
      "type": "ECOSYSTEM"
    }
  ],
  "versions": [
    "v9.0.0",
    "v9.1.0",
    "v9.2.0",
    "v9.2.1",
    "v9.3.0",
    "v9.3.1",
    "v9.3.2",
    "v9.3.3",
    "v9.4.0",
    "v9.5.0",
    "v9.5.1",
    "v9.5.10",
    "v9.5.11",
    "v9.5.12",
    "v9.5.13",
    "v9.5.14",
    "v9.5.15",
    "v9.5.16",
    "v9.5.17",
    "v9.5.18",
    "v9.5.19",
    "v9.5.2",
    "v9.5.20",
    "v9.5.21",
    "v9.5.22",
    "v9.5.23",
    "v9.5.24",
    "v9.5.3",
    "v9.5.4",
    "v9.5.5",
    "v9.5.6",
    "v9.5.7",
    "v9.5.8",
    "v9.5.9"
  ]
}

Set up in your agent.

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Unrestricted File Upload in Form Framework

The advisory, in context

Problem

Solution

Credits

References

Affected packages

References