zope products-pluggableauthservice CVE-2021-21336 in Zope and Plone Products
Published on March 8, 2021

Exposure of Sensitive Information to an Unauthorized Actor in Products.PluggableAuthService ZODBRoleManager

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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"`.

Github Repository NVD

Vulnerability Analysis

CVE-2021-21336 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Type

What is an Information Disclosure Vulnerability?

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

CVE-2021-21336 has been classified to as an Information Disclosure vulnerability or weakness.


Products Associated with CVE-2021-21336

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Zope Products Pluggableauthservice
 
Plone
 

Affected Versions

zopefoundation Products.PluggableAuthService Version < 2.6.0 is affected by CVE-2021-21336

Vulnerable Packages

The following package name and versions may be associated with CVE-2021-21336

Package Manager Vulnerable Package Versions Fixed In
pip Products.PluggableAuthService < 2.6.0 2.6.0

Exploit Probability

EPSS
0.32%
Percentile
54.97%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.