CVE-2024-20953: Oracle Agile PLM RCE Vulnerability

CVE-2024-20953 Overview

CVE-2024-20953 is a critical insecure deserialization vulnerability affecting the Oracle Agile Product Lifecycle Management (PLM) platform, specifically within the Export component. This vulnerability enables a low-privileged attacker with network access via HTTP to achieve complete compromise of the Oracle Agile PLM system, including full control over confidentiality, integrity, and availability of the affected system.

Critical Impact

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. Successful exploitation allows attackers to achieve complete system takeover of Oracle Agile PLM installations, potentially compromising sensitive product lifecycle data and supply chain operations.

Affected Products

• Oracle Agile Product Lifecycle Management version 9.3.6
• Oracle Supply Chain (component: Export)
• Oracle Agile PLM deployments with network-accessible HTTP interfaces

Discovery Timeline

• 2024-01-16 - Oracle releases security patch in Critical Patch Update
• 2024-02-17 - CVE-2024-20953 published to NVD
• 2025-10-27 - Last updated in NVD database

Technical Details for CVE-2024-20953

Vulnerability Analysis

This vulnerability stems from insecure deserialization (CWE-502) within Oracle Agile PLM's Export component. The flaw allows attackers with low-privilege network access to submit maliciously crafted serialized objects via HTTP requests. When the vulnerable application processes these objects, it deserializes them without proper validation, enabling arbitrary code execution within the application's security context.

The ease of exploitation is particularly concerning—the attack requires no user interaction and can be conducted remotely over standard HTTP connections. This makes the vulnerability highly attractive to threat actors seeking to compromise enterprise supply chain management systems.

Root Cause

The root cause lies in the Export component's failure to properly validate and sanitize serialized data before processing. The application accepts serialized Java objects from user-controlled input without implementing adequate security controls such as type checking, allowlisting of permitted classes, or integrity verification of the serialized data stream.

Attack Vector

The attack is conducted over the network via HTTP, targeting the Export functionality within Oracle Agile PLM. An attacker with low-level authenticated access can craft malicious serialized payloads that, when processed by the vulnerable component, execute arbitrary code on the target system.

The attack chain typically involves:

1. Authenticating to the Oracle Agile PLM system with minimal privileges
2. Identifying the vulnerable Export component endpoint
3. Crafting a malicious serialized object payload using known gadget chains
4. Submitting the payload via HTTP request to the Export functionality
5. Achieving code execution when the application deserializes the malicious object

Technical details and proof-of-concept information are available through the Zero Day Initiative Advisory ZDI-24-096.

Detection Methods for CVE-2024-20953

Indicators of Compromise

• Unusual or anomalous HTTP POST requests to Export-related endpoints in Oracle Agile PLM
• Presence of Java serialization magic bytes (AC ED 00 05) in HTTP request bodies
• Unexpected process spawns or child processes initiated by the Oracle Agile PLM application server
• Unauthorized file system access or modifications originating from the PLM application context

Detection Strategies

• Monitor HTTP traffic for requests containing serialized Java objects targeting Export component endpoints
• Implement web application firewall (WAF) rules to detect and block known deserialization attack patterns
• Deploy endpoint detection and response (EDR) solutions to identify post-exploitation behaviors such as reverse shells or lateral movement
• Analyze application server logs for unusual Export operations or error patterns indicative of exploitation attempts

Monitoring Recommendations

• Enable detailed logging for all Oracle Agile PLM Export component operations
• Configure SIEM alerts for authentication anomalies followed by Export functionality access
• Monitor for outbound network connections from the PLM server to unexpected destinations
• Implement file integrity monitoring on Oracle Agile PLM installation directories

How to Mitigate CVE-2024-20953

Immediate Actions Required

• Apply the Oracle Critical Patch Update from January 2024 immediately
• Restrict network access to Oracle Agile PLM systems to trusted networks and users only
• Review authentication logs for suspicious low-privilege account activity
• Consider temporarily disabling the Export functionality if patching is not immediately possible

Patch Information

Oracle has addressed this vulnerability in the Oracle Critical Patch Update (CPU) January 2024. Organizations running Oracle Agile PLM version 9.3.6 must apply this security update as a critical priority given the confirmed active exploitation status.

Due to the CISA KEV listing, federal agencies and organizations following CISA guidance should prioritize remediation according to established deadlines. Additional information is available at the CISA Known Exploited Vulnerabilities Catalog.

Workarounds

• Implement network segmentation to isolate Oracle Agile PLM systems from untrusted networks
• Deploy a web application firewall with rules to block Java deserialization attack patterns
• Restrict access to the Export component through application-level access controls
• Implement strict authentication requirements and review user privileges to minimize exposure

# Network isolation example - restrict access to Oracle Agile PLM
# Add firewall rules to limit HTTP access to trusted IP ranges only
iptables -A INPUT -p tcp --dport 80 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP