GHSA-qrxh-46mr-pr7q TYPO3 is susceptible to Cross-Site Flashing

Not scored Published

An attacker can embed malicious flash videos from external domains in TYPO3, potentially leading to cross-site scripting attacks.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is GHSA-qrxh-46mr-pr7q?

GHSA-qrxh-46mr-pr7q is a cross-site scripting vulnerability in typo3/cms, published on 3 Jun 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The flashplayer misses to validate flash and image files. Therefore it is possible to embed flash videos from external domains.

Which versions are affected by GHSA-qrxh-46mr-pr7q?

2 open source packages ship an affected version, including typo3/cms.

PackageAffectedFixed in
typo3/cms PackagistFrom 6.2.06.2.16
typo3/cms PackagistFrom 6.2.06.2.16

How do I fix GHSA-qrxh-46mr-pr7q?

Upgrade typo3/cms to 6.2.16 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is GHSA-qrxh-46mr-pr7q being exploited?

There is no known exploitation of GHSA-qrxh-46mr-pr7q in the wild and no public exploit code.

Sources

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