CVE-2023-36814 Products.CMFCore unauthenticated denial of service and crash via unchecked use of input with Python's marshal module
Unauthenticated attackers can cause a denial of service and crash in Zope CMF applications by sending malicious input to a public method.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-36814?
CVE-2023-36814 is a high-severity denial of service vulnerability in zopefoundation Products.CMFCore, published on 3 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Products.CMFCore are the key framework services for the Zope Content Management Framework (CMF). The use of Python's marshal module to handle unchecked input in a public method on `PortalFolder` objects can lead to an unauthenticated denial of service and crash situation. The code in question is exposed by all portal software built on top of `Products.CMFCore`, such as Plone. All deployments are vulnerable. The code has been fixed in `Products.CMFCore` version 3.2.
Weakness: CWE-770
Which versions are affected by CVE-2023-36814?
5 open source packages ship an affected version, including Products.CMFCore and products-cmfcore. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
Products.CMFCore PyPI | All versions | 2.7.1 |
Products.CMFCore PyPI | From 3.0 | 3.2 |
products-cmfcore PyPI | All versions | 2.7.1 |
products-cmfcore PyPI | All versions | 3.2 |
products-cmfcore PyPI | From 3.0 | 3.2 |
Products include Zope Products.cmfcore.
How do I fix CVE-2023-36814?
Upgrade Products.CMFCore to a fixed version for your release line: 2.7.1 or 3.2.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-36814 being exploited?
There is no known exploitation of CVE-2023-36814 in the wild and no public exploit code.
Sources
Also known as GHSA-4hpj-8rhv-9x87, PYSEC-2023-113.