CVE-2022-25271
📋 TL;DR
This vulnerability in Drupal core's form API allows improper input validation in certain contributed or custom module forms. Attackers could inject disallowed values or overwrite data, potentially altering critical or sensitive information. Drupal sites using affected contributed or custom modules are vulnerable.
💻 Affected Systems
- Drupal Core
📦 What is this software?
Drupal by Drupal
Drupal by Drupal
Drupal by Drupal
Fedora by Fedoraproject
Fedora by Fedoraproject
⚠️ Risk & Real-World Impact
Worst Case
An attacker could overwrite critical data or inject malicious values leading to data corruption, privilege escalation, or unauthorized data modification.
Likely Case
Limited data manipulation in specific forms, potentially affecting form submissions or stored values in uncommon configurations.
If Mitigated
With proper input validation and access controls, impact is minimal as this only affects specific contributed/custom module forms.
🎯 Exploit Status
Exploitation requires knowledge of specific vulnerable forms and typically requires some level of access to submit forms.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Drupal 9.3.6 or 9.2.13
Vendor Advisory: https://www.drupal.org/sa-core-2022-003
Restart Required: No
Instructions:
1. Update Drupal core to version 9.3.6 or 9.2.13. 2. Run database updates if required. 3. Clear all caches.
🔧 Temporary Workarounds
Disable vulnerable modules
allIdentify and disable any contributed or custom modules with vulnerable form implementations
drush pm:uninstall MODULE_NAME
🧯 If You Can't Patch
- Implement additional input validation in custom/contributed module forms
- Restrict access to vulnerable forms using Drupal's permission system
🔍 How to Verify
Check if Vulnerable:
Check Drupal version with 'drush status' or via admin/reports/status. If version is 9.3.x < 9.3.6 or 9.2.x < 9.2.13, you are vulnerable.Check Version:
drush status | grep 'Drupal version'Verify Fix Applied:
Confirm Drupal version is 9.3.6 or higher, or 9.2.13 or higher. Test vulnerable forms if known.📡 Detection & Monitoring
Log Indicators:
- Unusual form submissions with unexpected values
- Failed validation attempts on specific forms
Network Indicators:
- POST requests to form endpoints with unexpected parameters
SIEM Query:
web_requests WHERE method='POST' AND (uri CONTAINS '/form/' OR uri CONTAINS '/submit') AND parameters CONTAINS suspicious_values🔗 References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVKIOWSXL2RF2ULNAP7PHESYCFSZIJE3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGSY236PYSFYIEBRGDERLA7OSY6D7XL4/
- https://www.drupal.org/sa-core-2022-003
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVKIOWSXL2RF2ULNAP7PHESYCFSZIJE3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGSY236PYSFYIEBRGDERLA7OSY6D7XL4/
- https://www.drupal.org/sa-core-2022-003
