CVE-2024-21175: Oracle WebLogic Server Privilege Escalation

CVE-2024-21175 Overview

CVE-2024-21175 is a vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware, specifically affecting the Core component. This vulnerability allows an unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server instances. Successful exploitation can result in unauthorized creation, deletion, or modification access to critical data or all Oracle WebLogic Server accessible data.

Critical Impact

This vulnerability enables unauthenticated remote attackers to manipulate critical data within Oracle WebLogic Server environments without requiring any user interaction or prior authentication.

Affected Products

• Oracle WebLogic Server 12.2.1.4.0
• Oracle WebLogic Server 14.1.1.0.0

Discovery Timeline

• July 16, 2024 - CVE-2024-21175 published to NVD
• June 9, 2025 - Last updated in NVD database

Technical Details for CVE-2024-21175

Vulnerability Analysis

This vulnerability resides in the Core component of Oracle WebLogic Server, a widely deployed Java EE application server used in enterprise environments for hosting business-critical applications. The flaw is characterized as easily exploitable, requiring no authentication or user interaction to trigger.

The vulnerability allows remote attackers to compromise data integrity by performing unauthorized operations including creation, deletion, and modification of critical data. The attack surface is accessible over HTTP, making it particularly dangerous for internet-facing WebLogic deployments.

The CWE classification includes CWE-787 (Out-of-bounds Write), indicating that the vulnerability may involve memory corruption issues where data is written beyond the boundaries of allocated memory buffers in the Core component.

Root Cause

The vulnerability stems from improper handling within the WebLogic Server Core component. The out-of-bounds write condition (CWE-787) suggests that input validation or boundary checking mechanisms are insufficient, allowing attackers to write data outside intended memory regions. This can lead to data corruption and unauthorized modification of server-managed resources.

Attack Vector

The attack vector is network-based, requiring only HTTP access to the vulnerable WebLogic Server instance. The exploitation characteristics include:

• Access Required: Network access via HTTP protocol
• Authentication: None required - unauthenticated attackers can exploit this vulnerability
• User Interaction: None required - no victim interaction needed
• Complexity: Low - the vulnerability is described as easily exploitable

Attackers can send specially crafted HTTP requests to vulnerable WebLogic Server instances to trigger the vulnerability and manipulate critical data.

The vulnerability mechanism involves improper memory handling in the WebLogic Server Core component. Attackers can exploit this flaw by sending malformed HTTP requests that cause the server to write data beyond allocated memory boundaries, resulting in unauthorized data manipulation. For detailed technical information, refer to the Oracle Critical Patch Update Advisory.

Detection Methods for CVE-2024-21175

Indicators of Compromise

• Unusual HTTP traffic patterns targeting WebLogic Server administrative or application endpoints
• Unexpected modifications to critical data or configuration files within WebLogic Server
• Anomalous process behavior or memory usage patterns from WebLogic Server processes
• Evidence of unauthorized data creation, deletion, or modification in WebLogic-managed databases

Detection Strategies

• Monitor HTTP traffic to WebLogic Server instances for malformed or anomalous requests targeting the Core component
• Implement network-based intrusion detection rules to identify exploitation attempts against WebLogic Server
• Deploy application-level logging to capture detailed request information for forensic analysis
• Configure alerts for unauthorized data modifications within WebLogic Server environments

Monitoring Recommendations

• Enable comprehensive WebLogic Server audit logging and forward logs to a centralized SIEM platform
• Monitor file integrity of WebLogic Server configuration and data directories
• Establish baseline network traffic patterns and alert on deviations for WebLogic Server traffic
• Implement real-time alerting for failed authentication attempts and unusual access patterns

How to Mitigate CVE-2024-21175

Immediate Actions Required

• Apply the Oracle Critical Patch Update (CPU) for July 2024 immediately to all affected WebLogic Server instances
• Restrict network access to WebLogic Server instances using firewall rules to limit exposure
• Implement Web Application Firewall (WAF) rules to filter potentially malicious HTTP requests
• Audit current WebLogic Server deployments to identify all instances running vulnerable versions 12.2.1.4.0 and 14.1.1.0.0

Patch Information

Oracle has addressed this vulnerability in the July 2024 Critical Patch Update. Administrators should download and apply the appropriate patches from the Oracle Critical Patch Update Advisory. The patch should be applied to all WebLogic Server instances running versions 12.2.1.4.0 and 14.1.1.0.0.

Workarounds

• Isolate vulnerable WebLogic Server instances behind network segmentation to limit attacker access
• Implement strict IP whitelisting to allow only trusted sources to communicate with WebLogic Server
• Deploy a reverse proxy with request filtering capabilities in front of WebLogic Server instances
• Consider temporarily disabling non-essential WebLogic Server functionality until patches can be applied

# Example: Restrict WebLogic Server access using iptables
# Allow only trusted management IPs to access WebLogic admin console
iptables -A INPUT -p tcp --dport 7001 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 7001 -j DROP

# Log all connection attempts to WebLogic Server for monitoring
iptables -A INPUT -p tcp --dport 7001 -j LOG --log-prefix "WEBLOGIC_ACCESS: "