CVE-2025-10771: Jeecg JimuReport RCE Vulnerability

CVE-2025-10771 Overview

A deserialization vulnerability has been identified in JeecgBoot JimuReport up to version 2.1.2. The vulnerability affects the /drag/onlDragDataSource/testConnection endpoint within the DB2 JDBC Handler component. An attacker can exploit this flaw by manipulating the clientRerouteServerListJNDIName argument, leading to insecure deserialization of untrusted data. The vulnerability can be exploited remotely over the network, and the exploit has been publicly disclosed.

Critical Impact

Remote attackers with low privileges can exploit the deserialization flaw to potentially execute arbitrary code or compromise data integrity through malicious JNDI lookups via the DB2 JDBC connection handler.

Affected Products

• JeecgBoot JimuReport versions up to and including 2.1.2
• Applications utilizing the DB2 JDBC Handler component with exposed testConnection functionality
• Systems with network-accessible JimuReport data source configuration endpoints

Discovery Timeline

• September 21, 2025 - CVE-2025-10771 published to NVD
• October 8, 2025 - Last updated in NVD database

Technical Details for CVE-2025-10771

Vulnerability Analysis

This vulnerability stems from improper input validation (CWE-20) and insecure deserialization (CWE-502) within the JimuReport application. The affected endpoint /drag/onlDragDataSource/testConnection is designed to test database connectivity for data source configuration. However, the implementation fails to properly validate or sanitize the clientRerouteServerListJNDIName parameter before processing it in the DB2 JDBC connection context.

When an attacker supplies a malicious JNDI reference through this parameter, the application attempts to resolve the JNDI name without adequate security controls. This can lead to deserialization of attacker-controlled objects, potentially enabling remote code execution or other malicious activities on the vulnerable system.

Root Cause

The root cause of this vulnerability lies in the improper handling of the clientRerouteServerListJNDIName argument within the DB2 JDBC Handler. The application does not implement adequate input validation or sanitization before the JNDI lookup operation is performed. This allows attackers to inject arbitrary JNDI references that point to malicious remote resources, triggering unsafe deserialization when the application attempts to resolve these references.

The vulnerability is exacerbated by the lack of allowlist filtering for JNDI endpoints and the absence of deserialization guards that would prevent instantiation of dangerous object types.

Attack Vector

The attack can be executed remotely over the network by authenticated users with low privileges. The attacker sends a crafted HTTP request to the /drag/onlDragDataSource/testConnection endpoint with a malicious value for the clientRerouteServerListJNDIName parameter.

The exploitation flow involves supplying a JNDI reference (such as rmi:// or ldap://) pointing to an attacker-controlled server. When the application processes this parameter during the database connection test, it performs a JNDI lookup that fetches and deserializes a malicious object from the remote server. This technique is similar to well-known JNDI injection attacks and can lead to arbitrary code execution if exploitable gadget chains are present in the application's classpath.

For detailed technical information about this vulnerability, refer to the GitHub Issue Discussion and the VulDB entry.

Detection Methods for CVE-2025-10771

Indicators of Compromise

• Unusual HTTP POST requests to /drag/onlDragDataSource/testConnection containing JNDI-related strings such as rmi://, ldap://, or jndi: in the request body
• Outbound network connections from the JimuReport application server to unexpected external hosts on RMI (port 1099) or LDAP (port 389/636) ports
• Java deserialization errors or exceptions in application logs related to unexpected class instantiation
• Process spawning or system command execution originating from the Java/Tomcat process running JimuReport

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block requests containing JNDI injection patterns in the clientRerouteServerListJNDIName parameter
• Deploy network monitoring to identify anomalous outbound connections from web application servers to external LDAP or RMI services
• Enable verbose logging for the JimuReport application and monitor for deserialization-related exceptions or JNDI lookup failures
• Utilize endpoint detection and response (EDR) solutions to identify suspicious process activity spawned by Java application servers

Monitoring Recommendations

• Configure SIEM rules to alert on HTTP requests to /drag/onlDragDataSource/testConnection containing suspicious payloads
• Monitor network egress traffic for connections to unusual external IP addresses on common JNDI exploitation ports
• Set up alerts for Java process anomalies including unexpected child process creation or file system modifications
• Review application server logs regularly for deserialization warnings or JNDI resolution failures

How to Mitigate CVE-2025-10771

Immediate Actions Required

• Restrict network access to the /drag/onlDragDataSource/testConnection endpoint to trusted administrative users only
• Implement input validation to block JNDI-related strings in the clientRerouteServerListJNDIName parameter
• Consider disabling the testConnection functionality if not required in production environments
• Apply network segmentation to prevent the JimuReport server from making outbound connections to untrusted hosts

Patch Information

At the time of publication, no official vendor patch has been confirmed for this vulnerability. Organizations using JeecgBoot JimuReport should monitor the official JimuReport GitHub repository for security updates and upgrade announcements. Users are advised to upgrade beyond version 2.1.2 when a patched version becomes available.

Workarounds

• Deploy a reverse proxy or WAF in front of JimuReport to filter malicious requests targeting the vulnerable endpoint
• Implement Java security manager policies to restrict JNDI lookups to trusted internal resources only
• Disable or remove the DB2 JDBC Handler component if DB2 database connectivity is not required
• Apply network-level controls to block outbound RMI and LDAP connections from the application server

# Example: Block outbound JNDI exploitation ports using iptables
iptables -A OUTPUT -p tcp --dport 1099 -m owner --uid-owner tomcat -j DROP
iptables -A OUTPUT -p tcp --dport 389 -m owner --uid-owner tomcat -j DROP
iptables -A OUTPUT -p tcp --dport 636 -m owner --uid-owner tomcat -j DROP