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CVE-2023-47634

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Date: February 20, 2024

Decidim is a participatory democracy framework. Starting in version 0.10.0 and prior to versions 0.26.9, 0.27.5, and 0.28.0, a race condition in the endorsement of resources (for instance, a proposal) allows a user to make more than once endorsement. To exploit this vulnerability, the request to set an endorsement must be sent several times in parallel. Versions 0.26.9, 0.27.5, and 0.28.0 contain a patch for this issue. As a workaround, disable the Endorsement feature in the components.

Language: Ruby

Severity Score

Related Resources (10)

https://github.com/decidim/decidim/releases/tag/v0.27.5
https://github.com/decidim/decidim/security/advisories/GHSA-r275-j57c-7mf2
https://github.com/decidim/decidim/releases/tag/v0.28.0
https://nvd.nist.gov/vuln/detail/CVE-2023-47634
https://github.com/decidim/decidim
https://github.com/decidim/decidim/commit/5c5ee7a50d75c10643dd8c495e2517641e4d74db
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-47634.yml
https://github.com/decidim/decidim/commit/7b840d2c37a562709f4481db644d8c43add28536
https://github.com/decidim/decidim/releases/tag/v0.26.9
https://www.mend.io/vulnerability-database/CVE-2023-47634

Severity Score

Weakness Type (CWE)

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-362

Top Fix

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Upgrade Version

Upgrade to version decidim - 0.26.9;decidim - 0.27.5

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): LOW
Availability (A): NONE

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