CVE-2023-23913.yml

---
gem: actionview
framework: rails
cve: 2023-23913
ghsa: xp5h-f8jf-rc8q
url: https://discuss.rubyonrails.org/t/cve-2023-23913-dom-based-cross-site-scripting-in-rails-ujs-for-contenteditable-html-elements/82468
title: DOM Based Cross-site Scripting in rails-ujs for contenteditable HTML Elements
date: 2023-03-13
description: |
  NOTE: rails-ujs is part of Rails/actionview since 5.1.0.

  There is a potential DOM based cross-site scripting issue in rails-ujs
  which leverages the Clipboard API to target HTML elements that are
  assigned the contenteditable attribute. This has the potential to
  occur when pasting malicious HTML content from the clipboard that
  includes a data-method, data-remote or data-disable-with attribute.

  This vulnerability has been assigned the CVE identifier CVE-2023-23913.

  Not affected: < 5.1.0
  Versions Affected: >= 5.1.0
  Fixed Versions: 6.1.7.3, 7.0.4.3

  Impact
    If the specified malicious HTML clipboard content is provided to a
    contenteditable element, this could result in the arbitrary execution
    of javascript on the origin in question.

  Releases
    The FIXED releases are available at the normal locations.

  Workarounds
    We recommend that all users upgrade to one of the FIXED versions.
    In the meantime, users can attempt to mitigate this vulnerability
    by removing the contenteditable attribute from elements in pages
    that rails-ujs will interact with.

  Patches
    To aid users who aren’t able to upgrade immediately we have provided
    patches for the two supported release series. They are in git-am
    format and consist of a single changeset.

  * rails-ujs-data-method-contenteditable-6-1.patch - Patch for 6.1 series
  * rails-ujs-data-method-contenteditable-7-0.patch - Patch for 7.0 series

  Please note that only the 7.0.Z and 6.1.Z series are
  supported at present, and 6.0.Z for severe vulnerabilities.

  Users of earlier unsupported releases are advised to upgrade as
  soon as possible as we cannot guarantee the continued availability
  of security fixes for unsupported releases.

  Credits
    We would like to thank ryotak 15 for reporting this!

  * rails-ujs-data-method-contenteditable-6-1.patch (8.5 KB)
  * rails-ujs-data-method-contenteditable-7-0.patch (8.5 KB)
  * rails-ujs-data-method-contenteditable-main.patch (8.9 KB)
cvss_v3: 7.5
unaffected_versions:
  - "< 5.1.0"
patched_versions:
  - "~> 6.1.7.3"
  - ">= 7.0.4.3"
related:
  url:
    - https://discuss.rubyonrails.org/t/cve-2023-23913-dom-based-cross-site-scripting-in-rails-ujs-for-contenteditable-html-elements/82468
    - https://www.cve.org/CVERecord?id=CVE-2023-23913
    - https://vulmon.com/vendoradvisory?qidtp=debian_cvelist_bugreportlogs&qid=aa67066c383f12dee5aee964667de4d8
    - https://access.redhat.com/security/cve/cve-2023-23913
    - https://bugzilla.redhat.com/show_bug.cgi?id=2182160
    - https://security.snyk.io/vuln/SNYK-RUBY-RAILS-5291540
    - https://www.suse.com/security/cve/CVE-2023-23913.html
    - https://security-tracker.debian.org/tracker/CVE-2023-23913
    - https://www.mend.io/vulnerability-database/CVE-2023-23913
    - https://github.com/jasnow/gsd-database/blob/main/2023/23xxx/GSD-2023-23913.json
notes: "CVE has been reserved, but not filled out."