CVE-2021-33509 Incorrect Permission Assignment for Critical Resource in Plone
Authenticated managers can perform unauthorized disk I/O via crafted arguments in Plone's ReStructuredText transform.
- 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-2021-33509?
CVE-2021-33509 is a critical path traversal vulnerability in Plone Plone, published on 21 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Plone through 5.2.4 allows remote authenticated managers to perform disk I/O via crafted keyword arguments to the ReStructuredText transform in a Python script.
Weakness: CWE-732
Which versions are affected by CVE-2021-33509?
3 open source packages ship an affected version, including plone and Plone. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
plone PyPI | All versions | 5.2.5 |
plone PyPI | All versions | 5.2.5 |
Plone PyPI | All versions | 5.2.5 |
Products include Plone Plone.
How do I fix CVE-2021-33509?
Upgrade plone to 5.2.5 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-33509 being exploited?
There is no known exploitation of CVE-2021-33509 in the wild and no public exploit code.
Other vulnerabilities in Plone Plone
Sources
Also known as GHSA-hm2p-fhwx-9285, PYSEC-2021-81.