medium
6.4
CWE
79
Advisory Published
CVE Published
Updated

CVE-2021-32667: Cross-Site Scripting in Page Preview

First published: Tue Jul 20 2021(Updated: )

> ### Meta > * CVSS: `CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC` (5.0) ### Problem Failing to properly encode _Page TSconfig_ settings, corresponding page preview module (_Web>View_) is vulnerable to persistent cross-site scripting. A valid backend user account is needed to exploit this vulnerability. ### Solution Update to TYPO3 versions 9.5.28, 10.4.18, 11.3.1 that fix the problem described. ### Credits Thanks to TYPO3 core merger Oliver Bartsch who reported and fixed the issue. ### References * [TYPO3-CORE-SA-2021-009](https://typo3.org/security/advisory/typo3-core-sa-2021-009)

Credit: security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
composer/typo3/cms>=10.0.0<10.4.18>=11.0.0<11.3.1>=9.0.0<9.5.28
composer/typo3/cms-core>=10.0.0<10.4.18>=11.0.0<11.3.1>=9.0.0<9.5.28
Typo3 Typo3>=9.0.0<=9.5.287
Typo3 Typo3>=10.0.0<=10.4.17
Typo3 Typo3>=11.0.0<=11.3.0
composer/typo3/cms>=9.0.0<9.5.28
9.5.28
composer/typo3/cms>=11.0.0<11.3.1
11.3.1
composer/typo3/cms>=10.0.0<10.4.18
10.4.18
composer/typo3/cms-core>=11.0.0<11.3.1
11.3.1
composer/typo3/cms-core>=10.0.0<10.4.18
10.4.18
composer/typo3/cms-core>=9.0.0<9.5.28
9.5.28
>=9.0.0<=9.5.287
>=10.0.0<=10.4.17
>=11.0.0<=11.3.0

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2021-32667.

  • What is the title of the vulnerability?

    The title of the vulnerability is TYPO3-CORE-SA-2021-009: Cross-Site Scripting in Page Preview.

  • What is TYPO3?

    TYPO3 is an open source PHP based web content management system.

  • Which versions of TYPO3 are affected by this vulnerability?

    Versions 9.0.0 through 9.5.28, 10.0.0 through 10.4.17, and 11.0.0 through 11.3.0 are affected by this vulnerability.

  • What is the severity of CVE-2021-32667?

    The severity of CVE-2021-32667 is medium with a CVSS score of 5.4.

  • How does this vulnerability occur?

    This vulnerability occurs when _Page TSconfig_ settings are not properly encoded, making the page preview module vulnerable to cross-site scripting attacks.

  • How do I fix the vulnerability in TYPO3?

    To fix the vulnerability in TYPO3, upgrade to versions 9.5.29, 10.4.18, or 11.3.1 or later.

  • Where can I find more information about TYPO3-CORE-SA-2021-009?

    You can find more information about TYPO3-CORE-SA-2021-009 at the TYPO3 security advisory page: https://typo3.org/security/advisory/typo3-core-sa-2021-009.

  • Where can I find the security advisories for TYPO3?

    You can find the security advisories for TYPO3 at the TYPO3 security advisories page: https://typo3.org/security/advisories.

  • What is the Common Weakness Enumeration (CWE) for this vulnerability?

    The Common Weakness Enumeration (CWE) for this vulnerability is CWE-79.

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