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CVE-2021-32633

Remote Code Execution via traversal in TAL expressions

Published: May 21, 2021Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-22
NVD MITRE
6.8CVSSMEDIUM
EPSS Score
1.8%
Top 23.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-22

Affected Products

Zopezopefoundation
Mixed
Web & CMS Plugins / cms-core
ploneplone
On-prem
Web & CMS Plugins / cms-core
zopezope
On-prem
OSS Libraries / web-framework
ZopePyPIOSS Libraries
zopefoundationoss-projectWeb & CMS Pluginsaka zope, restrictedpython, accesscontrol
ploneoss-projectNLWeb & CMS Pluginsaka plone cms
zopeoss-projectOSS Librariesaka zodb, accesscontrol, zope
pypipackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://github.com/zopefoundation/Zope/security/advisories/GHSA-5pr9-v234-jw36
github.com
https://github.com/zopefoundation/Zope/commit/1f8456bf1f908ea46012537d52bd7e752a532c91
github.com
http://www.openwall.com/lists/oss-security/2021/05/21/1
openwall.com
and 6 more references View all →

Timeline

Published
May 21, 2021
Last Updated
Nov 21, 2024

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