CVE-2012-3330 in WebSphere Application Server
Summary
by MITRE
The proxy server in IBM WebSphere Application Server 7.0 before 7.0.0.27, 8.0 before 8.0.0.5, and 8.5 before 8.5.0.1, and WebSphere Virtual Enterprise, allows remote attackers to cause a denial of service (daemon outage) via a crafted request.
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Analysis
by VulDB Data Team • 04/19/2021
The vulnerability identified as CVE-2012-3330 represents a critical denial of service flaw within IBM WebSphere Application Server proxy components. This weakness affects multiple versions of the application server including 7.0 prior to 7.0.0.27, 8.0 prior to 8.0.0.5, and 8.5 prior to 8.5.0.1, as well as WebSphere Virtual Enterprise deployments. The vulnerability specifically targets the proxy server functionality that serves as a critical intermediary component in application server architectures, facilitating communication between clients and backend applications while providing features such as load balancing, caching, and security filtering.
The technical flaw manifests through improper handling of crafted HTTP requests that exploit memory management issues within the proxy server implementation. When remote attackers submit maliciously constructed requests to the affected proxy server, the system fails to properly validate or process these inputs, leading to resource exhaustion or memory corruption that ultimately results in daemon termination. This behavior aligns with CWE-121, which describes heap-based buffer overflow conditions, and CWE-400, which covers unspecified denial of service vulnerabilities. The vulnerability operates at the application layer of the OSI model, specifically affecting the HTTP proxy functionality that forms part of the broader application server infrastructure.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise entire application availability within enterprise environments. Organizations utilizing WebSphere Application Server in production environments face significant risk of unauthorized denial of service attacks that could render critical business applications inaccessible to legitimate users. The vulnerability's remote exploitability means that attackers need not have physical access to the system, making it particularly dangerous in publicly accessible environments. This flaw can be categorized under the MITRE ATT&CK technique T1499.004, which covers network denial of service attacks, and represents a critical threat to business continuity and service availability. The proxy server's role in enterprise architectures means that a successful exploitation could affect multiple applications and services that depend on the affected WebSphere instance.
Mitigation strategies for this vulnerability require immediate patch application to the affected versions of IBM WebSphere Application Server. Organizations should prioritize updating to the patched versions 7.0.0.27, 8.0.0.5, and 8.5.0.1 respectively, as these releases contain the necessary fixes to address the memory handling issues. Additionally, network-level protections such as intrusion prevention systems and firewall rules can be implemented to limit access to the proxy server ports and monitor for suspicious request patterns. Security teams should consider implementing rate limiting mechanisms and request validation controls to reduce the impact of potential exploitation attempts. The vulnerability's characteristics align with the security principle of defense in depth, where multiple layers of protection are required to mitigate the risk of such critical infrastructure failures. Organizations should also conduct thorough security assessments to identify any additional vulnerable components within their WebSphere deployments that may require similar remediation efforts.