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CVE-2021-41114GHSA-M2JH-FXW4-GPHMBIT-TYPO3-2021-41114

HTTP Host Header Injection in Request Handling in Typo3

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 11.5.0
None on Exploit-DB, Metasploit or GitHub

Summary

TYPO3 is an open source PHP based web content management system released under the GNU GPL. It has been discovered that TYPO3 CMS is susceptible to host spoofing due to improper validation of the HTTP Host header. TYPO3 uses the HTTP Host header, for example, to generate absolute URLs during the frontend rendering process. Since the host header itself is provided by the client, it can be forged to any value, even in a name-based virtual hosts environment. This vulnerability is the same as described in TYPO3-CORE-SA-2014-001 (CVE-2014-3941). A regression, introduced during TYPO3 v11 development, led to this situation. The already existing setting $GLOBALS['TYPO3_CONF_VARS']['SYS']['trustedHostsPattern'] (used as an effective mitigation strategy in previous TYPO3 versions) was not evaluated anymore, and reintroduced the vulnerability.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • TYPO3 typo3

    From 11.0.0 · fixed in 11.5.0

  • typo3/cms-corePackagist

    From 11.0.0 · fixed in 11.5.0

  • typo3/cmsPackagist

    From 11.0.0 · fixed in 11.5.0

References 3

GitHub · TYPO3/typo3

typo3.org