2.6. CVE-2012-5650: DOM based Cross-Site Scripting via Futon UI

2.6.1. Description

Query parameters passed into the browser-based test suite are not sanitised, and can be used to load external resources. An attacker may execute JavaScript code in the browser, using the context of the remote user.

2.6.2. Mitigation

Upgrade to a supported CouchDB release that includes this fix, such as:

• 1.0.4
• 1.1.2
• 1.2.1
• 1.3.x

All listed releases have included a specific fix.

2.6.3. Work-Around

Disable the Futon user interface completely, by adapting local.ini and restarting CouchDB:

[httpd_global_handlers]
_utils = {couch_httpd_misc_handlers, handle_welcome_req, <<"Forbidden">>}

Or by removing the UI test suite components:

• share/www/verify_install.html
• share/www/couch_tests.html
• share/www/custom_test.html

2.6.4. Acknowledgement

This vulnerability was discovered & reported to the Apache Software Foundation by Frederik Braun.