CVE-2004-0385 in Application Server Web Cache
Summary
by MITRE
Heap-based buffer overflow in Oracle 9i Application Server Web Cache 9.0.4.0.0, 9.0.3.1.0, 9.0.2.3.0, and 9.0.0.4.0 allows remote attackers to execute arbitrary code via a long HTTP request method header to the Web Cache listener. NOTE: due to the vagueness of the Oracle advisory, it is not clear whether there are additional issues besides this overflow, although the advisory alludes to multiple "vulnerabilities."
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Analysis
by VulDB Data Team • 07/12/2025
The vulnerability described in CVE-2004-0385 represents a critical heap-based buffer overflow in Oracle 9i Application Server Web Cache components, specifically affecting versions 9.0.4.0.0, 9.0.3.1.0, 9.0.2.3.0, and 9.0.0.4.0. This flaw resides within the Web Cache listener implementation and demonstrates a classic memory corruption vulnerability that can be exploited remotely. The vulnerability operates by accepting an overly long HTTP request method header, which when processed by the affected Web Cache component, leads to unauthorized memory access patterns. The heap-based nature of this buffer overflow indicates that the vulnerable code allocates memory on the heap and subsequently writes beyond the allocated buffer boundaries, potentially overwriting adjacent memory structures. This type of vulnerability falls under the CWE-121 heap-based buffer overflow category, which is classified as a critical weakness in memory safety and represents a fundamental flaw in input validation and memory management practices. The security implications extend beyond simple code execution, as heap corruption can lead to unpredictable behavior, system instability, and complete compromise of the affected system.
The technical exploitation of this vulnerability requires a remote attacker to craft a malicious HTTP request containing an excessively long method header that exceeds the buffer size allocated by the Web Cache listener. When the vulnerable component processes this malformed request, the insufficient bounds checking allows the oversized data to overflow into adjacent heap memory regions. This overflow can overwrite critical memory structures including return addresses, function pointers, or other control data necessary for proper program execution. The attacker can leverage this memory corruption to inject and execute arbitrary code within the context of the Web Cache process, potentially gaining full system access. The attack vector is particularly concerning because it operates over standard HTTP protocols, making it accessible to any attacker with network connectivity to the affected server. According to the ATT&CK framework, this vulnerability maps to the T1203 technique of Exploitation for Client Execution, where the attacker leverages a remote service to execute malicious code on the target system. The fact that the Oracle advisory mentions multiple vulnerabilities suggests this may represent part of a broader attack surface that could include additional memory corruption issues within the same software component.
The operational impact of CVE-2004-0385 extends beyond immediate code execution capabilities to encompass complete system compromise and data breach potential. Organizations running affected Oracle 9i Application Server Web Cache versions face significant risk as attackers can potentially gain administrative privileges, access sensitive corporate data, or establish persistent backdoors within their network infrastructure. The vulnerability's remote exploitability means that attackers do not require physical access or local network presence to launch successful attacks, making it particularly dangerous for publicly exposed web servers. The heap corruption can also lead to denial of service conditions where the Web Cache service crashes or becomes unstable, resulting in service disruption for legitimate users. Additionally, the vague nature of the Oracle advisory regarding additional vulnerabilities indicates that organizations may face multiple attack vectors within the same software component, potentially requiring comprehensive patching strategies rather than single vulnerability remediation. The attack could be automated through scanning tools that identify vulnerable systems, making organizations with exposed Web Cache services prime targets for mass exploitation campaigns.
Mitigation strategies for CVE-2004-0385 should include immediate patching of affected Oracle 9i Application Server Web Cache components to the latest available security releases from Oracle. Organizations should implement network segmentation and access controls to limit exposure of Web Cache services to untrusted networks, particularly by blocking unnecessary HTTP ports and implementing proper firewall rules. Network monitoring should be enhanced to detect anomalous HTTP request patterns, including unusually long method headers that may indicate exploitation attempts. The implementation of intrusion detection systems with signature-based detection for known exploit patterns related to this vulnerability can provide early warning capabilities. Additionally, organizations should conduct comprehensive vulnerability assessments to identify all instances of affected Oracle software across their infrastructure and prioritize remediation efforts based on risk exposure. Regular security updates and patch management processes should be strengthened to prevent similar vulnerabilities from remaining unaddressed in the future. The use of application firewalls or web application firewalls can provide additional protection layers that filter malicious HTTP requests before they reach the vulnerable Web Cache components. Organizations should also consider implementing proper input validation and length checking mechanisms within their own applications to reduce the attack surface and provide defense-in-depth measures against similar buffer overflow vulnerabilities.