CVE-2025-34316
📋 TL;DR
This stored XSS vulnerability in IPFire allows authenticated attackers to inject malicious JavaScript through mail server configuration fields. When other users view the mail settings page, the injected code executes in their browser context. This affects all IPFire installations running versions before 2.29 Core Update 198.
💻 Affected Systems
- IPFire
📦 What is this software?
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
Ipfire by Ipfire
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker could steal administrator session cookies, perform actions as other users, or redirect users to malicious sites, potentially leading to full system compromise.
Likely Case
Attackers with authenticated access could steal session tokens or credentials from other users viewing the mail configuration page.
If Mitigated
With proper input validation and output encoding, the malicious scripts would be rendered harmless as text rather than executable code.
🎯 Exploit Status
Requires authenticated access to the web interface. Exploitation involves injecting JavaScript into mail server username/password fields.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: IPFire 2.29 Core Update 198
Vendor Advisory: https://www.ipfire.org/blog/ipfire-2-29-core-update-198-released
Restart Required: No
Instructions:
1. Log into IPFire web interface as admin. 2. Navigate to System > Updates. 3. Apply Core Update 198. 4. Verify update completes successfully.
🔧 Temporary Workarounds
Restrict Mail Configuration Access
allLimit which users can access mail server configuration settings to reduce attack surface.
🧯 If You Can't Patch
- Restrict web interface access to trusted IP addresses only using firewall rules.
- Implement Content Security Policy (CSP) headers to mitigate XSS impact.
🔍 How to Verify
Check if Vulnerable:
Check IPFire version via web interface dashboard or SSH command: cat /etc/ipfire-releaseCheck Version:
cat /etc/ipfire-releaseVerify Fix Applied:
Verify version shows 2.29 or higher after applying Core Update 198.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /cgi-bin/mail.cgi with JavaScript in parameters
- Multiple failed login attempts followed by mail configuration changes
Network Indicators:
- HTTP POST requests to mail.cgi containing script tags or JavaScript code in parameters
SIEM Query:
source="ipfire_web_logs" AND uri_path="/cgi-bin/mail.cgi" AND (http_method="POST") AND (param="txt_mailuser" OR param="txt_mailpass") AND (value CONTAINS "<script>" OR value CONTAINS "javascript:")