MediumGHSA-hww5-6x85-mc24

Typo3 Arbitrary Code Execution and Cross-Site Scripting in Backend API

Published 5 Jun 2024 · Updated 2 Dec 2024

Affected packages

typo3/cmsComposer

Affected: >=8.0.0 <8.7.27
Fixed in: 8.7.27

Update to the fixed version for your release line, for example:composer require typo3/cms:^8.7.27

typo3/cmsComposer

Affected: >=9.0.0 <9.5.8
Fixed in: 9.5.8

Update to the fixed version for your release line, for example:composer require typo3/cms:^9.5.8

Details

Backend API configuration using Page TSconfig is vulnerable to arbitrary code execution and cross-site scripting. TSconfig fields of page properties in backend forms can be used to inject malicious sequences. Field tsconfig_includes is vulnerable to directory traversal leading to same scenarios as having direct access to TSconfig settings.

A valid backend user account having access to modify values for fields pages.TSconfig and pages.tsconfig_includes is needed in order to exploit this vulnerability.

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References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.