CVE-2013-4320 TYPO3 Improper Access Management in the File Abstraction Layer

Medium 5.5 Published Updated

Authenticated users can bypass permission checks to create or read arbitrary files in TYPO3 via crafted URLs.

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 CVE-2013-4320?

CVE-2013-4320 is a medium-severity missing authorization vulnerability in Typo3 Typo3, published on 20 May 2014. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The File Abstraction Layer (FAL) in TYPO3 6.0.x before 6.0.9 and 6.1.x before 6.1.4 does not properly check permissions, which allows remote authenticated users to create or read arbitrary files via a crafted URL.

Weakness: CWE-264

Which versions are affected by CVE-2013-4320?

4 open source packages ship an affected version, including typo3/cms-core. It affects 1 product.

PackageAffectedFixed in
typo3/cms-core PackagistFrom 6.06.0.9
typo3/cms-core PackagistFrom 6.06.0.9
typo3/cms-core PackagistFrom 6.16.1.4
typo3/cms-core PackagistFrom 6.16.1.4

Products include Typo3 Typo3.

How do I fix CVE-2013-4320?

Upgrade typo3/cms-core to a fixed version for your release line: 6.0.9 or 6.1.4.

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

Is CVE-2013-4320 being exploited?

There is no known exploitation of CVE-2013-4320 in the wild and no public exploit code.

All Typo3 Typo3 vulnerabilities

Sources

Also known as GHSA-p9jg-9w87-6rg4.

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