CVE-2025-62395
📋 TL;DR
This vulnerability allows users with lower-level permissions to access cohort information from the system context, potentially exposing restricted administrative data. It affects systems using the vulnerable cohort search web service where improper access controls are in place.
💻 Affected Systems
- Red Hat products with cohort search web service functionality
📦 What is this software?
Moodle by Moodle
Moodle by Moodle
Moodle by Moodle
Moodle by Moodle
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized users could access sensitive administrative cohort data, potentially leading to information disclosure of privileged system information.
Likely Case
Users with some permissions could access cohort data they shouldn't see, violating intended access controls and potentially exposing some administrative information.
If Mitigated
With proper access controls and context isolation, the impact would be limited to minimal information disclosure within intended user groups.
🎯 Exploit Status
Requires authenticated user with some permissions attempting to access cohort data from system context
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Red Hat advisory for specific fixed versions
Vendor Advisory: https://access.redhat.com/security/cve/CVE-2025-62395
Restart Required: No
Instructions:
1. Check Red Hat advisory for affected products. 2. Apply recommended patches. 3. Verify access controls are properly enforced.
🔧 Temporary Workarounds
Restrict cohort search access
allTemporarily restrict or disable cohort search functionality for non-administrative users
Enforce context isolation
allImplement additional access control checks to prevent cross-context data access
🧯 If You Can't Patch
- Implement strict role-based access controls to limit cohort data access
- Monitor and audit cohort search activities for unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check if users with lower context permissions can access system context cohort data through the web serviceCheck Version:
Check product-specific version commands (e.g., rpm -q <package-name>)Verify Fix Applied:
Test that users can only access cohort data within their assigned context after applying patches📡 Detection & Monitoring
Log Indicators:
- Unauthorized cohort search attempts
- Access to cohort data from unexpected contexts
- Failed access control checks for cohort queries
Network Indicators:
- Unusual cohort search request patterns
- Requests for cohort data from non-administrative users
SIEM Query:
source="cohort_search" AND (user.context!="system" AND data.context="system")