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CVE-2021-32811— Remote Code Execution via Script (Python) objects under Python 3

Quick assessment

Affected
zopefoundation Zope
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Zope是Zope（ZOPE）社区的一套使用Python语言编写的、面向对象的开源Web应用服务器。 Zope存在安全漏洞，该漏洞源于存在远程代码执行问题。

CVSS 7.5 · High EPSS 2.30% · P83

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-32811

Vulnerability Information
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Vulnerability Title
Remote Code Execution via Script (Python) objects under Python 3
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-915
Source: CVE Program / CVE List V5
Vulnerability Title
Zope 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zope是Zope（ZOPE）社区的一套使用Python语言编写的、面向对象的开源Web应用服务器。 Zope存在安全漏洞，该漏洞源于存在远程代码执行问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
zopefoundation Zope >= 4.0, < 4.6.3 -

II. Public POCs for CVE-2021-32811

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III. Intelligence Information for CVE-2021-32811

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Patches & Fixes for CVE-2021-32811 (1)

Vendor Advisories for CVE-2021-32811 (2)

IV. Related Vulnerabilities

Same product: Zope
Same vendor: zopefoundation
Same weakness: CWE-915

V. Comments for CVE-2021-32811

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