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MEDIUM severity

TYPO3 Denial of Service in Online Media Asset HandlingGHSA-f3wf-q4fj-3gxf

MEDIUMFix: TYPO3/typo3@054799c

GHSA-f3wf-q4fj-3gxf is a medium-severity (CVSS 6.5) vulnerability in typo3/cms. A fix is available for typo3/cms — see the affected versions and patch details below.

Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Dec 4, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

3 pkgs affected
🐘typo3/cms🐘typo3/cms🐘typo3/cms

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Online Media Asset Handling (*.youtube and *.vimeo files) in the TYPO3 backend is vulnerable to denial of service. Putting large files with according file extensions results in high consumption of system resources. This can lead to exceeding limits of the current PHP process which results in a dysfunctional backend component. A valid backend user account or write access on the server system (e.g. SFTP) is needed in order to exploit this vulnerability.

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagisttypo3/cms≥ 7.0.0&&< 7.6.327.6.32composer require typo3/cms:^7.6.32
🐘Packagisttypo3/cms≥ 8.0.0&&< 8.7.218.7.21composer require typo3/cms:^8.7.21
🐘Packagisttypo3/cms≥ 9.0.0&&< 9.5.29.5.2composer require typo3/cms:^9.5.2

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for typo3/cms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update typo3/cms to 7.6.32 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f3wf-q4fj-3gxf is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

Online Media Asset Handling (*`.youtube` and *`.vimeo` files) in the TYPO3 backend is vulnerable to denial of service. Putting large files with according file extensions results in high consumption of system resources. This can lead to exceeding limits of the current PHP process which results in a dysfunctional backend component. A valid backend user account or write access on the server system (e.g. SFTP) is needed in order to exploit this vulnerability.
O3 Security · Impact-Aware SCA

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TYPO3 Denial of Service in Online Media Asset Handling