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CVE-2021-21359

CVE-2021-21359 · Denial of Service in Page Error Handling

This page contains facts from public vulnerability sources. Check the original advisory before updating.

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.25, 10.4.14, 11.1.1 requesting invalid or non-existing resources via HTTP triggers the page error handler which again could retrieve content to be shown as error message from another page. This leads to a scenario in which the application is calling itself recursively - amplifying the impact of the initial attack until the limits of the web server are exceeded. This is fixed in versions 9.5.25, 10.4.14, 11.1.1.

CVSS 5.9 · Medium · EPSS 1.7% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • typo3.cms

    Versions
    • >= 9.0.0, <= 9.5.24: Affected
    • >= 10.0.0, <= 10.4.13: Affected
    • >= 11.0.0, <= 11.1.0: Affected

    No fix published

  • typo3/cms-core Packagist

    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
    Affected ranges
    • ECOSYSTEM: ≥ 10.0.0, < 10.4.14

    Update to 10.4.14

  • typo3/cms-core Packagist

    Versions
    • v11.0.0
    • v11.1.0
    Affected ranges
    • ECOSYSTEM: ≥ 11.0.0, < 11.1.1

    Update to 11.1.1

  • typo3/cms-core Packagist

    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
    Affected ranges
    • ECOSYSTEM: ≥ 9.0.0, < 9.5.25

    Update to 9.5.25

  • typo3/cms Packagist

    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
    Affected ranges
    • ECOSYSTEM: ≥ 10.0.0, < 10.4.14

    Update to 10.4.14

  • typo3/cms Packagist

    Versions
    • v11.0.0
    • v11.1.0
    Affected ranges
    • ECOSYSTEM: ≥ 11.0.0, < 11.1.1

    Update to 11.1.1

  • typo3/cms Packagist

    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
    Affected ranges
    • ECOSYSTEM: ≥ 9.0.0, < 9.5.25

    Update to 9.5.25

Original sources

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