CVE-2023-22067 Overview
CVE-2023-22067 is an authorization bypass vulnerability in the CORBA (Common Object Request Broker Architecture) component of Oracle Java SE and Oracle GraalVM Enterprise Edition. This flaw allows unauthenticated attackers with network access to compromise affected systems via the CORBA protocol, potentially resulting in unauthorized modification of accessible data.
The vulnerability is particularly concerning because it can be exploited without user interaction by supplying malicious data to CORBA APIs. This attack vector does not require the use of Untrusted Java Web Start applications or Untrusted Java applets, making it exploitable through web services and other network-accessible interfaces.
Critical Impact
Unauthenticated remote attackers can exploit this vulnerability to perform unauthorized data modification through CORBA protocol manipulation, affecting data integrity in Java-based enterprise applications.
Affected Products
- Oracle JDK 1.8.0_381 and 1.8.0_381 (Enterprise Performance Pack)
- Oracle JRE 1.8.0_381 and 1.8.0_381 (Enterprise Performance Pack)
- Oracle GraalVM Enterprise Edition 20.3.11 and 21.3.7
- NetApp Cloud Insights Acquisition Unit
- NetApp Cloud Insights Storage Workload Security Agent
Discovery Timeline
- 2023-10-17 - CVE-2023-22067 published to NVD
- 2025-11-03 - Last updated in NVD database
Technical Details for CVE-2023-22067
Vulnerability Analysis
This vulnerability resides in the CORBA component of Oracle Java SE and GraalVM Enterprise Edition, which handles distributed object communication. The flaw stems from improper authorization controls (CWE-863) within the CORBA implementation, allowing attackers to bypass intended access restrictions.
The vulnerability is easily exploitable over the network without requiring any privileges or user interaction. While the impact is limited to integrity violations (unauthorized data modification) rather than confidentiality or availability concerns, it presents a significant risk in enterprise environments where Java-based applications rely on CORBA for inter-process communication.
Attackers can exploit this vulnerability by crafting malicious requests to CORBA APIs exposed through web services or other network-accessible interfaces. The exploitation does not depend on client-side technologies like Java Web Start or Java applets, which expands the attack surface to server-side applications.
Root Cause
The root cause of CVE-2023-22067 is an Incorrect Authorization vulnerability (CWE-863) in the CORBA component. The implementation fails to properly validate and enforce access controls when processing incoming CORBA requests, allowing unauthorized operations to be performed on protected data.
This authorization weakness enables attackers to submit specially crafted data to CORBA APIs that should otherwise require proper authentication or authorization, resulting in the ability to update, insert, or delete data that should be protected.
Attack Vector
The attack vector for CVE-2023-22067 is network-based, requiring no authentication or user interaction. An attacker can exploit this vulnerability by:
- Identifying a target system running a vulnerable version of Oracle Java SE or GraalVM Enterprise Edition with exposed CORBA services
- Crafting malicious CORBA protocol requests designed to bypass authorization checks
- Submitting these requests through web services or direct network connections to the CORBA APIs
- Achieving unauthorized modification of application data without proper credentials
The vulnerability affects CORBA APIs that can be accessed through various network interfaces, including web services, making it particularly relevant for enterprise Java applications that expose such functionality.
Detection Methods for CVE-2023-22067
Indicators of Compromise
- Unusual or unexpected CORBA protocol traffic from untrusted sources
- Anomalous data modifications in applications using CORBA-based communication
- Unexpected API calls to CORBA services from unauthenticated contexts
- Log entries showing CORBA requests with suspicious payloads or from unfamiliar IP addresses
Detection Strategies
- Monitor network traffic for anomalous CORBA protocol activity on ports typically used by Java applications
- Implement application-level logging for all CORBA API interactions and review for unauthorized access patterns
- Deploy intrusion detection systems with signatures for known CORBA exploitation techniques
- Audit data modification events in systems using CORBA-based communication for unauthorized changes
Monitoring Recommendations
- Enable verbose logging for Java applications using CORBA components
- Implement network segmentation to restrict access to CORBA services from untrusted networks
- Deploy SentinelOne Singularity Platform for real-time monitoring of Java application behaviors and network anomalies
- Establish baselines for normal CORBA traffic patterns to identify deviations
How to Mitigate CVE-2023-22067
Immediate Actions Required
- Inventory all systems running Oracle Java SE 8u381 or GraalVM Enterprise Edition 20.3.11/21.3.7
- Apply the latest Java Critical Patch Update from Oracle as soon as possible
- Restrict network access to CORBA services using firewall rules and network segmentation
- Review and audit applications that expose CORBA APIs for potential exposure
Patch Information
Oracle has addressed this vulnerability in their October 2023 Critical Patch Update (CPU). Affected organizations should upgrade to the latest patched versions of Oracle Java SE and GraalVM Enterprise Edition. For detailed patch information and download links, refer to the Oracle Security Alert October 2023.
Additional vendor advisories are available:
Workarounds
- Disable or restrict access to CORBA services if not required for business operations
- Implement network-level access controls to limit CORBA protocol exposure to trusted networks only
- Deploy web application firewalls (WAF) or API gateways with rules to filter malicious CORBA requests
- Consider migrating from CORBA to more modern and secure communication protocols where feasible
# Example: Restrict CORBA access using iptables
# Block external access to common CORBA ports (adjust ports as needed for your environment)
iptables -A INPUT -p tcp --dport 1050 -s ! 10.0.0.0/8 -j DROP
iptables -A INPUT -p tcp --dport 1099 -s ! 10.0.0.0/8 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
