CVE-2021-32674

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Summary

CVECVE-2021-32674
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-06-08 18:15:00 UTC
Updated2022-01-21 14:42:00 UTC
DescriptionZope is an open-source web application server. This advisory extends the previous advisory at https://github.com/zopefoundation/Zope/security/advisories/GHSA-5pr9-v234-jw36 with additional cases of TAL expression traversal vulnerabilities. Most Python modules are not available for using in TAL expressions that you can add through-the-web, for example in Zope Page Templates. This restriction avoids file system access, for example via the 'os' module. But some of the untrusted modules are available indirectly through Python modules that are available for direct use. By default, you need to have the Manager role to add or edit Zope Page Templates through the web. Only sites that allow untrusted users to add/edit Zope Page Templates through the web are at risk. The problem has been fixed in Zope 5.2.1 and 4.6.1. The workaround is the same as for https://github.com/zopefoundation/Zope/security/advisories/GHSA-5pr9-v234-jw36: 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.

Risk And Classification

Problem Types: CWE-22

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Zope Zope All All All All

References

ReferenceSourceLinkTags
Merge pull request from GHSA-rpcg-f9q6-2mq6 · zopefoundation/Zope@1d89791 · GitHub MISC github.com
Remote Code Execution via traversal in TAL expressions · Advisory · zopefoundation/Zope · GitHub MISC github.com
Zope · PyPI MISC pypi.org
Remote Code Execution via traversal in TAL expressions · Advisory · zopefoundation/Zope · GitHub CONFIRM github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 982331 Python (pip) Security Update for Zope (GHSA-5vq5-pg3r-9ph3)
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