CVE-2023-48217 Remote code execution via form uploads in statamic/cms

High 8.8 Published Updated

Attackers can upload malicious PHP files disguised as images to execute arbitrary code on Statamic CMS installations.

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-2023-48217?

CVE-2023-48217 is a high-severity vulnerability in statamic cms, published on 14 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Statamic is a flat-first, Laravel + Git powered CMS designed for building websites. In affected versions certain additional PHP files crafted to look like images may be uploaded regardless of mime type validation rules. This affects front-end forms using the "Forms" feature, and asset upload fields in the control panel. Malicious users could leverage this vulnerability to upload and execute code. This issue has been patched in versions 3.4.14 and 4.34.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Weakness: CWE-434, CWE-94

Which versions are affected by CVE-2023-48217?

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

PackageAffectedFixed in
statamic/cms PackagistAll versions3.4.14
statamic/cms PackagistAll versions3.4.14
statamic/cms PackagistFrom 4.0.04.34.0
statamic/cms PackagistFrom 4.0.04.34.0

Products include Statamic Statamic.

How do I fix CVE-2023-48217?

Upgrade statamic/cms to a fixed version for your release line: 3.4.14 or 4.34.0.

Is CVE-2023-48217 being exploited?

There is no known exploitation of CVE-2023-48217 in the wild and no public exploit code.

Sources

Also known as GHSA-2r53-9295-3m86.

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