CVE-2021-32807
4.4 · MEDIUMOverview
CVE-2021-32807 is a medium-severity vulnerability affecting zope accesscontrol. It was published on July 30, 2021 and has a CVSS 3.1 base score of 4.4 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
The module `AccessControl` defines security policies for Python code used in restricted code within Zope applications. Restricted code is any code that resides in Zope's object database, such as the contents of `Script (Python)` objects. The policies defined in `AccessControl` severely restrict access to Python modules and only exempt a few that are deemed safe, such as Python's `string` module. However, full access to the `string` module also allows access to the class `Formatter`, which can be overridden and extended within `Script (Python)` in a way that provides access to other unsafe Python libraries. Those unsafe Python libraries can be used for remote code execution. By default, you need to have the admin-level Zope "Manager" role to add or edit `Script (Python)` objects through the web. Only sites that allow untrusted users to add/edit these scripts through the web - which would be a very unusual configuration to begin with - are at risk. The problem has been fixed in AccessCon
Remediation
Check the references section for vendor advisories and patches from zope. Update accesscontrol to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| zope | accesscontrol | >= 4.0, < 4.3 | Affected |
References
Frequently Asked Questions
What is CVE-2021-32807?
CVE-2021-32807 is a medium-severity vulnerability affecting zope accesscontrol. It was published on July 30, 2021 and has a CVSS 3.1 base score of 4.4 (MEDIUM).
How severe is CVE-2021-32807?
This vulnerability has a CVSS 3.1 base score of 4.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-32807?
Check the references section for vendor advisories and patches from zope. Update accesscontrol to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-32807?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-32807 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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