CVE-2023-24814

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Summary

CVECVE-2023-24814
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-02-07 19:15:00 UTC
Updated2023-02-16 16:38:00 UTC
DescriptionTYPO3 is a free and open source Content Management Framework released under the GNU General Public License. In affected versions the TYPO3 core component `GeneralUtility::getIndpEnv()` uses the unfiltered server environment variable `PATH_INFO`, which allows attackers to inject malicious content. In combination with the TypoScript setting `config.absRefPrefix=auto`, attackers can inject malicious HTML code to pages that have not been rendered and cached, yet. As a result, injected values would be cached and delivered to other website visitors (persisted cross-site scripting). Individual code which relies on the resolved value of `GeneralUtility::getIndpEnv('SCRIPT_NAME')` and corresponding usages (as shown below) are vulnerable as well. Additional investigations confirmed that at least Apache web server deployments using CGI (FPM, FCGI/FastCGI, and similar) are affected. However, there still might be the risk that other scenarios like nginx, IIS, or Apache/mod_php are vulnerable. The usage of server environment variable `PATH_INFO` has been removed from corresponding processings in `GeneralUtility::getIndpEnv()`. Besides that, the public property `TypoScriptFrontendController::$absRefPrefix` is encoded for both being used as a URI component and for being used as a prefix in an HTML context. This mitigates the cross-site scripting vulnerability. Users are advised to update to TYPO3 versions 8.7.51 ELTS, 9.5.40 ELTS, 10.4.35 LTS, 11.5.23 LTS and 12.2.0 which fix this problem. For users who are unable to patch in a timely manner the TypoScript setting `config.absRefPrefix` should at least be set to a static path value, instead of using auto - e.g. `config.absRefPrefix=/`. This workaround **does not fix all aspects of the vulnerability**, and is just considered to be an intermediate mitigation to the most prominent manifestation.

Risk And Classification

Problem Types: CWE-79

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Typo3 Typo3 All All All All

References

ReferenceSourceLinkTags
typo3/TypoScriptFrontendController.php at v11.5.22 · TYPO3/typo3 · GitHub MISC github.com
CONFIG & config — TypoScript Reference main documentation MISC docs.typo3.org
TYPO3-CORE-SA-2023-001: Persisted Cross-Site Scripting in Frontend Rendering MISC typo3.org
[SECURITY] Prevent XSS due to wrong PATH_INFO evaluation · TYPO3/typo3@0005a6f · GitHub MISC github.com
TYPO3-PSA-2023-001: Important Security-Bulletin Pre-Announcement MISC typo3.org
Persisted Cross-Site Scripting in Frontend Rendering · Advisory · TYPO3/typo3 · GitHub MISC github.com
typo3/GeneralUtility.php at v11.5.22 · TYPO3/typo3 · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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