SSRF vulnerability using the Aegis DataBinding in Apache CXF

The SSRF vulnerability in Apache CXF allows an attacker to craft malicious requests that are processed by the server, effectively using the server as a proxy. This can lead to several severe consequences. Attackers could potentially scan internal networks for exposed services, access sensitive data stored within internal systems, or even interact with cloud provider metadata services to obtain credentials. The blast radius extends to any internal resource accessible via HTTP/HTTPS from the CXF server. Successful exploitation could lead to data breaches, privilege escalation, and complete system compromise. This vulnerability shares similarities with other SSRF exploits where attackers leverage trusted internal connections to bypass security boundaries.

Organizations using Apache CXF for web service integration, particularly those relying on the Aegis DataBinding for data serialization and deserialization, are at risk. This includes applications that process data from external sources without proper validation. Shared hosting environments where multiple applications share the same CXF instance are also particularly vulnerable.

• java / server:

ps -ef | grep cxf

• java / server:

find / -name "cxf-rt-databinding-aegis*.jar" -print

• generic web:

curl -I <affected_cxf_endpoint>

• generic web:

 grep -r "Aegis DataBinding" /var/log/apache2/access.log

1. 2024-03-15Disclosure

   disclosure

1. Reserviert2024-03-08
2. Veröffentlicht2024-03-15
3. Geändert2026-02-04
4. EPSS aktualisiert2026-04-02

The primary mitigation for CVE-2024-28752 is to upgrade Apache CXF to version 3.5.8 or later, 3.6.3 or later, or 4.0.4 or later. If immediate upgrading is not possible, consider implementing a Web Application Firewall (WAF) to filter outbound requests and block those targeting internal resources. Restrict network access to the CXF server to only necessary services. Carefully review and validate any user-supplied data used in constructing requests to prevent attackers from manipulating the destination URL. Monitor CXF logs for suspicious outbound requests originating from unexpected sources.