CVE-2024-32034: Decidim Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-rx9f-5ggv-5rh6
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CVSS 6.8
CWE-79
Published
Advisory Summary

CVE-2024-32034 is a MODERATE (CVSS 6.8) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Decidim libraries in the RubyGems ecosystem. The issue involves :admin vulnerable to cross-site scripting (xss) in the admin activity log. Remediation is available by upgrading affected packages to version 0.27.7, 0.28.2.

CVE-2024-32034 at a Glance

CVE Identifier CVE-2024-32034
GHSA Identifier GHSA-rx9f-5ggv-5rh6
Severity MODERATE
CVSS v3.1 Base Score 6.8
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Decidim
Package Ecosystem RubyGems
Published Date
Last Updated

Security Impact

CVSS: 6.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2024-32034

To remediate this vulnerability, upgrade all affected Decidim dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

decidim-admin fixed: 0.27.7 
Upgrade decidim-admin to 0.27.7
decidim-admin fixed: 0.28.2 
Upgrade decidim-admin to 0.28.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for decidim-admin

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-32034, inspect your project dependencies for Decidim:

inspect dependencies for decidim-admin

Analyze the terminal output to locate any version of Decidim in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.27.7), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Decidim, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact The admin panel is subject to potential XSS attach in case an admin assigns a valuator to a proposal, or does any other action that generates an admin activity log where one of the resources has an XSS crafted. ### Patches N/A ### Workarounds Redirect the pages /admin and /admin/logs to other admin pages to prevent this access (i.e. `/admin/organization/edit`) ### References OWASP ASVS v4.0.3-5.1.3

CVE-2024-32034 Affected Decidim Versions

2 component(s)
Fixed Versions:
0.27.70.28.2
Product / Package Ecosystem Affected Versions Fixed Version
decidim-admin
gem/decidim-admin
RubyGems
< 0.27.7
0.27.7
decidim-admin
gem/decidim-admin
RubyGems
≥ 0.28.0
< 0.28.2
0.28.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/decidim/decidim/security/advisories/GHSA-rx9f-5ggv-5rh6
NVD — CVE-2024-32034 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-32034
Security Fix Commit FIX COMMIT
https://github.com/decidim/decidim/commit/23fc8d702a4976727f78617f5e42353d67931645
Security Fix Commit FIX COMMIT
https://github.com/decidim/decidim/commit/9d79f09a2d38c87feb28725670d6cc1f55c22072
Security Fix Commit FIX COMMIT
https://github.com/decidim/decidim/commit/e494235d559be13dd1f8694345e6f6bba762d1c0
Security Fix Commit FIX COMMIT
https://github.com/decidim/decidim/commit/ff755e23814aeb56e9089fc08006a5d3faee47b6
Decidim Source Repository REPOSITORY
https://github.com/decidim/decidim
Decidim Source Repository REPOSITORY
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim-admin/CVE-2024-32034.yml

Frequently Asked Questions

What is CVE-2024-32034?
CVE-2024-32034 is a security vulnerability in Decidim involving :Admin vulnerable to cross-site scripting (XSS) in the admin activity log under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Decidim versions are affected?
Affected versions include releases prior to 0.27.7, 0.28.2 across affected packages: decidim-admin.
What version fixes CVE-2024-32034?
Upgrading to 0.27.7, 0.28.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is decidim-admin affected?
Yes, decidim-admin is affected in releases prior to 0.27.7, 0.28.2. Upgrade your dependency to 0.27.7, 0.28.2 or later.
What is the CVSS score of CVE-2024-32034?
CVE-2024-32034 has a CVSS v3.1 base score of 6.8 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N.
What CWE is associated with CVE-2024-32034?
CVE-2024-32034 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check RubyGems dependencies for CVE-2024-32034?
Run the dependency tree command: 'inspect dependencies for decidim-admin'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rx9f-5ggv-5rh6",
  "modified" : "2024-09-17T22:27:20Z",
  "published" : "2024-09-16T17:17:20Z",
  "aliases" : [ "CVE-2024-32034" ],
  "summary" : "Decidim::Admin vulnerable to cross-site scripting (XSS) in the admin activity log",
  "details" : "### Impact\nThe admin panel is subject to potential XSS attach in case an admin assigns a valuator to a proposal, or does any other action that generates an admin activity log where one of the resources has an XSS crafted. \n\n### Patches\n\nN/A\n\n### Workarounds\n\nRedirect the pages /admin and /admin/logs to other admin pages to prevent this access (i.e. `/admin/organization/edit`)\n\n### References\n\nOWASP ASVS v4.0.3-5.1.3\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "decidim-admin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.27.7"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.27.6"
    }
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "decidim-admin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.28.0"
      }, {
        "fixed" : "0.28.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.28.1"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/decidim/decidim/security/advisories/GHSA-rx9f-5ggv-5rh6"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-32034"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/decidim/decidim/commit/23fc8d702a4976727f78617f5e42353d67931645"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/decidim/decidim/commit/9d79f09a2d38c87feb28725670d6cc1f55c22072"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/decidim/decidim/commit/e494235d559be13dd1f8694345e6f6bba762d1c0"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/decidim/decidim/commit/ff755e23814aeb56e9089fc08006a5d3faee47b6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/decidim/decidim"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim-admin/CVE-2024-32034.yml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-09-16T17:17:20Z",
    "nvd_published_at" : "2024-09-16T19:16:10Z"
  }
}