Home/CVE/Zope is an open-source web application server. In Zope versions prior to 4.6 and 5.2, users can access untrusted modules
CVE

CVE-2021-32633

Zope is an open-source web application server. In Zope versions prior to 4.6 and 5.2, users can access untrusted modules

Zope is an open-source web application server. In Zope versions prior to 4.6 and 5.2, users can access untrusted modules indirectly through Python modules that are available for direct use. By default, only users with the Manager role can add or edit Zope Page Templates through the web, but sites that allow untrusted users to add/edit Zope Page Templates through the web are at risk from this vulnerability.

The problem has been fixed in Zope 5.2 and 4.6. As a workaround, a site administrator can restrict adding/editing Zope Page Templates through the web using the standard Zope user/role permission mechanisms. Untrusted users should not be assigned the Zope Manager role and adding/editing Zope Page Templates through the web should be restricted to trusted users only.

MEDIUM · CVSS 6.8 EPSS 0.00943
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
▤

Affected Products & Versions

4
plone<= 4.3.20
plone>= 5.0 and <= 5.2.4
zope< 4.6
zope>= 5.0 and < 5.2
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI zope HIGH fixed in 4.6
⚠

Public Exploits & PoCs

1
poccyllective.com · plone-authenticated-rce-cve-2021-32633cyllective.com
▣

Scoring & Timeline

6.8
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD21 May 2021 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2021/05/21/1Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/22/1Mailing ListThird Party Advisory
https://github.com/zopefoundation/Zope/commit/1f8456bf1f908ea46012537d52bd7e752a532c91PatchThird Party Advisory
https://github.com/zopefoundation/Zope/security/advisories/GHSA-5pr9-v234-jw36Third Party Advisory
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