CVE-2023-36814
First published: Mon Jul 03 2023(Updated: )
### Impact 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. ### Patches The code has been fixed in `Products.CMFCore` version 3.2. ### Workarounds Users can make the affected `decodeFolderFilter` method unreachable by editing the `PortalFolder.py` module in `Products.CMFCore` by hand and then restarting Zope. Go to line 233 of `PortalFolder.py` and remove both the `@security.public` decorator for `decodeFolderFilter` as well as the method's entire docstring. This is safe because the method is not actually used by current code. ### References - Products.CMFCore security advisory [GHSA-4hpj-8rhv-9x87](https://github.com/zopefoundation/Products.CMFCore/security/advisories/GHSA-4hpj-8rhv-9x87) ### Credits Thanks go to Nicolas VERDIER from onepoint. ### For more information If you have any questions or comments about this advisory: - Open an issue in the [Products.CMFCore issue tracker](https://github.com/zopefoundation/Products.CMFCore/issues) - Email us at [security@plone.org](mailto:security@plone.org)
Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zope Products.cmfcore | <3.2 | |
| pip/Products.CMFCore | <2.7.1 | 2.7.1 |
| pip/Products.CMFCore | >=3.0<3.2 | 3.2 |
| <3.2 |
Remedy
https://github.com/zopefoundation/Products.CMFCore/commit/40f03f43a60f28ca9485c8ef429efef729be54e5
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Reference Links
- https://github.com/zopefoundation/Products.CMFCore/commit/40f03f43a60f28ca9485c8ef429efef729be54e5
- https://github.com/zopefoundation/Products.CMFCore/security/advisories/GHSA-4hpj-8rhv-9x87
- https://nvd.nist.gov/vuln/detail/CVE-2023-36814
- https://github.com/pypa/advisory-database/tree/main/vulns/products-cmfcore/PYSEC-2023-113.yaml
- https://github.com/zopefoundation/Products.CMFCore/commit/c1847a9042abe7965271fa73762dfe091b576de
- https://github.com/advisories/GHSA-4hpj-8rhv-9x87 (Advisory)
Frequently Asked Questions
What is the impact of CVE-2023-36814?
The vulnerability can lead to an unauthenticated denial of service and crash situation.
Which software is affected by CVE-2023-36814?
Products.CMFCore and all portal software built on top of it, such as Plone.
How can the vulnerability be exploited?
By using Python's marshal module to handle unchecked input in a public method on PortalFolder objects.
What is the severity of CVE-2023-36814?
The severity of the vulnerability is high with a severity value of 7.
Where can I find more information about CVE-2023-36814?
You can find more information about CVE-2023-36814 on the following references: [GitHub Commit](https://github.com/zopefoundation/Products.CMFCore/commit/40f03f43a60f28ca9485c8ef429efef729be54e5), [GitHub Security Advisories](https://github.com/zopefoundation/Products.CMFCore/security/advisories/GHSA-4hpj-8rhv-9x87), [NVD Vulnerability Detail](https://nvd.nist.gov/vuln/detail/CVE-2023-36814).
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