CVE-2021-21336 Exposure of Sensitive Information to an Unauthorized Actor in Products.PluggableAuthService ZODBRoleManager

What is CVE-2021-21336?

CVE-2021-21336 is a medium-severity vulnerability in Plone Plone, published on 8 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Products.PluggableAuthService is a pluggable Zope authentication and authorization framework. In Products.PluggableAuthService before version 2.6.0 there is an information disclosure vulnerability - everyone can list the names of roles defined in the ZODB Role Manager plugin if the site uses this plugin. The problem has been fixed in version 2.6.0. Depending on how you have installed Products.PluggableAuthService, you should change the buildout version pin to 2.6.0 and re-run the buildout, or if you used pip simply do `pip install "Products.PluggableAuthService>=2.6.0"`.

Weakness: CWE-200

Which versions are affected by CVE-2021-21336?

3 open source packages ship an affected version, including products-pluggableauthservice and Products.PluggableAuthService. It affects 2 products.

Products include Plone Plone, Zope Products.pluggableauthservice.

How do I fix CVE-2021-21336?

Upgrade products-pluggableauthservice to 2.6.0 or later.

Is CVE-2021-21336 being exploited?

There is no known exploitation of CVE-2021-21336 in the wild and no public exploit code.

Other vulnerabilities in Plone Plone

• CVE-2021-33509 Incorrect Permission Assignment for Critical Resource in Plone Critical 9.9
• CVE-2020-35190 Hardcoded credentials in n/a Critical 9.8
• CVE-2020-7941 Plone Unauthenticated Write Vulnerability Critical 9.8
• CVE-2011-3587 Zope Command Execution Vulnerability Critical 9.3
• CVE-2021-33926 Server-Side Request Forgery in Plone CMS High 8.8

All Plone Plone vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-p75f-g7gx-2r7p, PYSEC-2021-44.