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Decidim has broken access control in templates

High severity GitHub Reviewed Published Oct 5, 2023 in decidim/decidim • Updated Nov 8, 2023

Package

bundler decidim (RubyGems)

Affected versions

>= 0.23.2, < 0.26.8
>= 0.27.0, < 0.27.4

Patched versions

0.26.8
0.27.4
bundler decidim-templates (RubyGems)
>= 0.23.2, < 0.26.8
>= 0.27.0, < 0.27.4
0.26.8
0.27.4

Description

Impact

The templates module doesn't enforce the correct permissions, allowing any logged-in user to access to this functionality in the administration panel. An attacker could use this vulnerability to change, create or delete templates of surveys.

References

@andreslucena andreslucena published to decidim/decidim Oct 5, 2023
Published to the GitHub Advisory Database Oct 5, 2023
Reviewed Oct 5, 2023
Published by the National Vulnerability Database Oct 6, 2023
Last updated Nov 8, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

EPSS score

0.092%
(41st percentile)

Weaknesses

CVE ID

CVE-2023-36465

GHSA ID

GHSA-639h-86hw-qcjq

Source code

Credits

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