GHSA-gwfx-p7mr-f92v Missing Access Check in TYPO3 CMS

Not scored Published

Attackers with limited access can bypass authorization checks to execute arbitrary Extbase actions, leading to information disclosure or remote code execution.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is GHSA-gwfx-p7mr-f92v?

GHSA-gwfx-p7mr-f92v is a missing authorization vulnerability in typo3/cms, published on 5 Jun 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Extbase request handling fails to implement a proper access check for requested controller/ action combinations, which makes it possible for an attacker to execute arbitrary Extbase actions by crafting a special request. To successfully exploit this vulnerability, an attacker must have access to at least one Extbase plugin or module action in a TYPO3 installation. The missing access check inevitably leads to information disclosure or remote code execution, depending on the action that an attacker is able to execute.

Which versions are affected by GHSA-gwfx-p7mr-f92v?

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

PackageAffectedFixed in
typo3/cms PackagistFrom 6.2.06.2.25
typo3/cms PackagistFrom 6.2.06.2.25
typo3/cms PackagistFrom 7.6.07.6.8
typo3/cms PackagistFrom 7.6.07.6.8
typo3/cms PackagistFrom 8.0.08.1.1
typo3/cms PackagistFrom 8.0.08.1.1

How do I fix GHSA-gwfx-p7mr-f92v?

Upgrade typo3/cms to a fixed version for your release line: 6.2.25, 7.6.8 or 8.1.1.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is GHSA-gwfx-p7mr-f92v being exploited?

There is no known exploitation of GHSA-gwfx-p7mr-f92v in the wild and no public exploit code.

Sources

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