CVE-2021-32811 Information

Description

Zope is an open-source web application server. Zope versions prior to versions 4.6.3 and 5.3 have a remote code execution security issue. In order to be affected one must use Python 3 for one’s Zope deployment run Zope 4 below version 4.6.3 or Zope 5 below version 5.3 and have the optional Products.PythonScripts add-on package installed. By default one must 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 are at risk. Zope releases 4.6.3 and 5.3 are not vulnerable. As a workaround a site administrator can restrict adding/editing Script (Python) objects through the web using the standard Zope user/role permission mechanisms. Untrusted users should not be assigned the Zope Manager role and adding/editing these scripts through the web should be restricted to trusted users only. This is the default configuration in Zope.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Reference

https://github.com/zopefoundation/AccessControl/security/advisories/GHSA-qcx9-j53g-ccgf https://github.com/zopefoundation/Zope/security/advisories/GHSA-g4gq-j4p2-j8fr https://github.com/zopefoundation/Zope/commit/f72a18dda8e9bf2aedb46168761668464a4be988

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.2