CVE-2024-0302: Fhs-opensource Iparking RCE Vulnerability

CVE-2024-0302 Overview

A critical insecure deserialization vulnerability has been discovered in fhs-opensource iparking version 1.5.22.RELEASE. This issue affects the processing of the /vueLogin file endpoint, where improper handling of serialized data allows attackers to execute arbitrary code on the target system. The vulnerability can be exploited remotely without authentication, making it particularly dangerous for exposed iparking deployments.

Critical Impact

This insecure deserialization vulnerability enables remote code execution (RCE) on affected iparking parking management systems. Attackers can leverage this flaw to gain complete control over the target server, potentially compromising connected parking infrastructure and sensitive operational data.

Affected Products

• fhs-opensource iparking version 1.5.22.RELEASE

Discovery Timeline

• 2024-01-08 - CVE-2024-0302 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-0302

Vulnerability Analysis

This vulnerability is classified under CWE-502 (Deserialization of Untrusted Data). The fhs-opensource iparking application fails to properly validate or sanitize serialized data before processing it at the /vueLogin endpoint. When the application deserializes malicious payloads, it can instantiate arbitrary objects and execute attacker-controlled code within the application context.

The vulnerability is particularly severe because it requires no authentication and can be exploited over the network. An attacker simply needs network access to the vulnerable endpoint to trigger the deserialization process with a crafted payload. The exploit details have been publicly disclosed, increasing the risk of active exploitation.

Root Cause

The root cause of this vulnerability lies in the application's failure to implement secure deserialization practices at the /vueLogin endpoint. The iparking application accepts serialized objects from untrusted sources without proper validation, type checking, or integrity verification. This allows attackers to inject malicious serialized objects that, when deserialized, execute arbitrary code or commands on the server.

Attack Vector

The attack can be initiated remotely over the network against the /vueLogin endpoint. An attacker crafts a malicious serialized payload containing dangerous object types or gadget chains. When the vulnerable iparking application processes this payload, the deserialization mechanism instantiates the attacker-controlled objects, leading to remote code execution.

The exploitation typically involves:

1. Identifying a vulnerable iparking instance with an exposed /vueLogin endpoint
2. Constructing a serialized payload using known gadget chains compatible with the application's classpath
3. Sending the malicious payload to the endpoint
4. Gaining code execution as the application process owner

Technical details regarding the exploitation mechanism can be found in the GitHub RCE Research Paper referenced in the vulnerability disclosure.

Detection Methods for CVE-2024-0302

Indicators of Compromise

• Unusual POST requests to the /vueLogin endpoint containing serialized Java objects or Base64-encoded payloads
• Suspicious process spawning from the iparking application process
• Unexpected outbound network connections originating from the iparking server
• Anomalous file system modifications in the iparking installation directory

Detection Strategies

• Monitor HTTP traffic for requests to /vueLogin containing serialized object signatures (e.g., aced0005 magic bytes for Java serialization)
• Implement Web Application Firewall (WAF) rules to detect and block deserialization payload patterns
• Deploy endpoint detection and response (EDR) solutions to identify suspicious child process creation
• Review application logs for deserialization errors or exceptions that may indicate exploitation attempts

Monitoring Recommendations

• Enable verbose logging for the iparking application, particularly for the /vueLogin endpoint
• Configure network monitoring to alert on unusual data volumes or patterns in requests to the vulnerable endpoint
• Implement file integrity monitoring on the iparking server to detect unauthorized modifications
• Set up alerts for unexpected service restarts or crashes that may indicate exploitation attempts

How to Mitigate CVE-2024-0302

Immediate Actions Required

• Restrict network access to iparking instances, ensuring they are not exposed to untrusted networks
• Place the /vueLogin endpoint behind authentication or access controls if possible
• Deploy a Web Application Firewall (WAF) with rules to block serialized object payloads
• Monitor systems for indicators of compromise while awaiting a vendor patch
• Consider taking vulnerable systems offline if they cannot be adequately protected

Patch Information

At the time of this writing, no official vendor patch information is available. Organizations should monitor the fhs-opensource iparking project for security updates and apply patches immediately when released. For additional context, refer to the VulDB entry #249869 for ongoing tracking of this vulnerability.

Workarounds

• Implement network segmentation to isolate iparking systems from untrusted network access
• Configure reverse proxy or WAF rules to filter requests containing deserialization payloads to the /vueLogin endpoint
• Disable or restrict access to the /vueLogin functionality if not required for operations
• Implement runtime application self-protection (RASP) if available for the Java environment
• Consider using serialization filters (if supported by the Java version) to restrict deserializable classes

# Example: Restrict access to /vueLogin endpoint using iptables
# Allow only trusted management networks
iptables -A INPUT -p tcp --dport 80 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP

# Or using nginx to block access to the vulnerable endpoint
# Add to nginx server configuration:
# location /vueLogin {
#     deny all;
#     return 403;
# }