CVE-2024-7266
π TL;DR
This vulnerability allows logged-in users in the EZD RP system to list all users, including those from other organizations, violating access control boundaries. It affects EZD RP versions 15 before 15.84, 16 before 16.15, and 17 before 17.2. The issue stems from incorrect user management (CWE-863) that fails to properly enforce organizational isolation.
π» Affected Systems
- Naukowa i Akademicka SieΔ Komputerowa - PaΕstwowy Instytut Badawczy EZD RP
π¦ What is this software?
β οΈ Risk & Real-World Impact
Worst Case
An attacker could enumerate all user accounts across organizations, potentially facilitating targeted attacks, credential theft, or social engineering campaigns against users from different entities.
Likely Case
Information disclosure where users can see names, usernames, or organizational affiliations of other users they shouldn't have access to, potentially violating privacy regulations.
If Mitigated
Limited impact with proper logging and monitoring that could detect unusual enumeration attempts, though some information disclosure may still occur.
π― Exploit Status
Requires authenticated access but appears to be a simple enumeration vulnerability once logged in.
π οΈ Fix & Mitigation
β Official Fix
Patch Version: 15.84, 16.15, 17.2
Vendor Advisory: https://www.gov.pl/web/ezd-rp
Restart Required: Yes
Instructions:
1. Identify current EZD RP version. 2. Download appropriate patch from vendor. 3. Apply patch according to vendor instructions. 4. Restart EZD RP services. 5. Verify fix by testing user enumeration.
π§ Temporary Workarounds
Restrict User Access
allLimit user permissions to minimum required functionality to reduce attack surface.
Enhanced Monitoring
allImplement logging and alerting for user enumeration activities.
π§― If You Can't Patch
- Implement network segmentation to isolate EZD RP systems from untrusted networks
- Deploy web application firewall rules to detect and block user enumeration patterns
π How to Verify
Check if Vulnerable:
Log into EZD RP as a standard user and attempt to list users from other organizations using system functionality.Check Version:
Check EZD RP administration interface or configuration files for version information.Verify Fix Applied:
After patching, attempt the same user enumeration test to confirm access is properly restricted to own organization.π‘ Detection & Monitoring
Log Indicators:
- Unusual number of user listing requests
- User enumeration patterns in access logs
- Requests for user data across organizational boundaries
Network Indicators:
- HTTP requests to user listing endpoints with parameters indicating cross-organization queries
SIEM Query:
source="ezd-rp" AND (event="user_list" OR event="user_query") AND org_id!="current_org"