CVE-2012-4065 in Eucalyptus
Summary
by MITRE
Eucalyptus before 3.1.1 does not properly restrict the binding of external SOAP web-services messages, which allows remote authenticated users to bypass unspecified authorization checks and obtain direct access to a (1) Cloud Controller or (2) Walrus service via a crafted message, as demonstrated by changes to a volume, snapshot, or cloud configuration setting.
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Analysis
by VulDB Data Team • 02/22/2019
The vulnerability identified as CVE-2012-4065 affects Eucalyptus cloud computing platforms version 3.1.1 and earlier, representing a critical authorization bypass flaw that undermines the security model of cloud infrastructure services. This issue stems from improper handling of external SOAP web services messages within the platform's service architecture, specifically impacting the Cloud Controller and Walrus services that manage core cloud operations and storage functions. The vulnerability allows authenticated remote attackers to craft malicious SOAP messages that circumvent the platform's intended access controls, potentially enabling unauthorized modifications to critical cloud resources.
The technical implementation of this vulnerability resides in the SOAP message processing layer where external service bindings are not adequately validated or restricted. When Eucalyptus processes incoming SOAP requests, it fails to properly validate the message origins and intended service endpoints, allowing attackers to manipulate message headers or content to redirect requests to protected services. This flaw operates at the service communication layer where SOAP messages are interpreted and routed through the platform's internal service mesh, creating a pathway for privilege escalation through crafted message manipulation.
The operational impact of CVE-2012-4065 is severe and multifaceted, as it enables attackers to gain unauthorized access to critical cloud infrastructure components. Successful exploitation can result in unauthorized modifications to storage volumes, snapshot configurations, and cloud system settings, potentially leading to data corruption, service disruption, or complete compromise of cloud resources. The vulnerability affects both Cloud Controller operations that manage compute resources and Walrus services responsible for storage management, making it particularly dangerous for cloud environments where these services handle sensitive customer data and operational configurations.
From a cybersecurity perspective, this vulnerability aligns with CWE-284 (Improper Access Control) and represents a classic case of insufficient input validation within web service communication protocols. The ATT&CK framework categorizes this as a privilege escalation technique through service manipulation, where attackers leverage weaknesses in service authentication and authorization to gain elevated access rights. Organizations implementing Eucalyptus cloud solutions face significant risk exposure, particularly in multi-tenant environments where unauthorized access to storage services could lead to data breaches and service availability issues.
The recommended mitigation strategy involves immediate deployment of Eucalyptus version 3.1.1 or later, which includes proper message binding restrictions and enhanced SOAP service validation mechanisms. System administrators should also implement network-level restrictions to limit external access to SOAP endpoints, enforce strict service authentication requirements, and monitor for unusual service access patterns. Additional protective measures include regular security assessments of web service configurations, implementation of intrusion detection systems for monitoring unauthorized service access attempts, and establishment of comprehensive audit logging for all cloud management operations. Organizations should also consider network segmentation to isolate critical cloud services and implement zero-trust access controls that validate all service requests regardless of their apparent source or authorization status.