CVE-2024-52003
📋 TL;DR
This vulnerability in Traefik allows attackers to manipulate the X-Forwarded-Prefix header from untrusted sources, potentially enabling URL redirection attacks. All users running vulnerable versions of Traefik are affected. The issue could allow attackers to redirect users to malicious websites.
💻 Affected Systems
- Traefik
📦 What is this software?
Traefik by Traefik
Traefik by Traefik
⚠️ Risk & Real-World Impact
Worst Case
Attackers could redirect users to phishing sites or malicious content, potentially leading to credential theft, malware installation, or further exploitation.
Likely Case
URL redirection attacks where users are tricked into visiting malicious sites, potentially enabling phishing campaigns or social engineering attacks.
If Mitigated
With proper input validation and header sanitization, the risk is limited to potential information disclosure about internal routing.
🎯 Exploit Status
Exploitation requires sending HTTP requests with malicious X-Forwarded-Prefix headers, which is straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.11.14 or 3.2.1
Vendor Advisory: https://github.com/traefik/traefik/security/advisories/GHSA-h924-8g65-j9wg
Restart Required: Yes
Instructions:
1. Identify your Traefik version using 'traefik version' command. 2. For Traefik 2.x: Upgrade to 2.11.14 or later. 3. For Traefik 3.x: Upgrade to 3.2.1 or later. 4. Restart Traefik service after upgrade.
🔧 Temporary Workarounds
No official workarounds
allThe vendor states there are no known workarounds for this vulnerability
🧯 If You Can't Patch
- Implement WAF rules to block or sanitize X-Forwarded-Prefix headers from untrusted sources
- Monitor logs for suspicious header manipulation attempts and implement rate limiting
🔍 How to Verify
Check if Vulnerable:
Check Traefik version: if running version below 2.11.14 (for v2) or below 3.2.1 (for v3), you are vulnerable.Check Version:
traefik versionVerify Fix Applied:
After upgrade, verify version is 2.11.14+ (v2) or 3.2.1+ (v3) using 'traefik version' command.📡 Detection & Monitoring
Log Indicators:
- Unusual X-Forwarded-Prefix header values
- Requests with malformed or suspicious prefix headers
- Unexpected redirect patterns
Network Indicators:
- HTTP requests with manipulated X-Forwarded-Prefix headers
- Unusual redirect patterns in HTTP traffic
SIEM Query:
source="traefik" AND (http.headers.X-Forwarded-Prefix="*malicious*" OR http.headers.X-Forwarded-Prefix CONTAINS "http://" OR http.headers.X-Forwarded-Prefix CONTAINS "https://")