CVE-2024-4812
📋 TL;DR
This vulnerability allows stored cross-site scripting (XSS) attacks in the Katello plugin for Foreman. Attackers can inject malicious JavaScript into user description fields, which executes when victims view affected pages like Host Collections. Organizations using vulnerable versions of Foreman with Katello plugin are affected.
💻 Affected Systems
- Foreman with Katello plugin
📦 What is this software?
Katello by Katello Project
Satellite by Redhat
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, or redirect users to malicious sites, potentially leading to account compromise or further system access.
Likely Case
Attackers with user account access could perform targeted attacks against administrators or other users viewing affected pages, potentially stealing credentials or session data.
If Mitigated
With proper input validation and output encoding, malicious scripts would be rendered harmless as text rather than executable code.
🎯 Exploit Status
Requires authenticated access to modify user descriptions. Exploitation is straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Katello plugin 4.15.1
Vendor Advisory: https://access.redhat.com/security/cve/CVE-2024-4812
Restart Required: Yes
Instructions:
1. Update Katello plugin to version 4.15.1 or later. 2. Restart Foreman services. 3. Verify the fix by checking plugin version.
🔧 Temporary Workarounds
Input validation enhancement
linuxImplement additional input validation for user description fields to sanitize JavaScript content
# Requires custom Foreman plugin development or configuration
Content Security Policy
linuxImplement strict CSP headers to mitigate XSS impact
# Configure in Foreman web server settings or application configuration
🧯 If You Can't Patch
- Restrict user permissions to prevent unauthorized users from modifying description fields
- Implement web application firewall rules to detect and block XSS payloads in user inputs
🔍 How to Verify
Check if Vulnerable:
Check Katello plugin version: 'foreman-rake katello:version' or check installed package versionCheck Version:
foreman-rake katello:versionVerify Fix Applied:
Verify Katello plugin version is 4.15.1 or later and test that JavaScript in description fields is properly sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual modifications to user description fields
- JavaScript patterns in user profile updates
Network Indicators:
- HTTP requests containing JavaScript payloads in POST data to user update endpoints
SIEM Query:
source="foreman" AND ("description" OR "user_update") AND ("script" OR "javascript" OR "onclick")