CVE-2011-3565 in Communications Unified
Summary
by MITRE
Unspecified vulnerability in Oracle Communications Unified 7.0 allows local users to affect confidentiality, integrity, and availability via unknown vectors related to Calendar Server.
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Analysis
by VulDB Data Team • 04/19/2017
The vulnerability identified as CVE-2011-3565 resides within Oracle Communications Unified 7.0, specifically within the Calendar Server component of this telecommunications infrastructure solution. This unspecified weakness represents a critical security gap that affects the foundational security controls of enterprise communication systems. The Calendar Server functionality serves as a central repository for scheduling information and calendar events, making it a potentially attractive target for malicious actors seeking to compromise organizational communication networks. The vulnerability's classification as local user accessible indicates that exploitation requires physical or administrative access to the system, yet the impact spans all three fundamental security principles of confidentiality, integrity, and availability. This triad compromise suggests that attackers could potentially read sensitive calendar data, modify scheduling information, or disrupt calendar services entirely, creating cascading effects throughout enterprise operations that rely on coordinated scheduling and resource management.
The technical nature of this vulnerability stems from unspecified vectors within the Calendar Server implementation that allow for unauthorized access to system resources or data. While the exact mechanism remains undisclosed, such vulnerabilities typically arise from improper input validation, insufficient access controls, or flawed privilege management within the calendar service architecture. The Calendar Server component likely processes user requests for calendar operations including event creation, modification, deletion, and retrieval, making these operations potential attack surfaces. Security researchers and penetration testers would typically analyze such vulnerabilities through reverse engineering of system binaries, network traffic analysis, and code review to identify the underlying flaw that permits local users to manipulate system behavior beyond normal operational boundaries. The unspecified nature of the vector suggests either incomplete disclosure by the vendor or that the vulnerability exists in a complex interaction between multiple system components that is difficult to isolate and describe precisely.
The operational impact of CVE-2011-3565 extends beyond simple data compromise to potentially disrupt critical business operations that depend on accurate calendar information. Organizations using Oracle Communications Unified 7.0 may experience significant disruption when calendar services become unavailable or when scheduling data becomes corrupted, leading to missed meetings, resource conflicts, and operational inefficiencies. The confidentiality aspect of the vulnerability could expose sensitive scheduling information including personal calendar entries, business meeting details, project timelines, and resource allocation data that might contain proprietary information. Integrity compromises could result in calendar events being modified without authorization, potentially causing significant operational damage when meeting times are altered or resources are incorrectly scheduled. Availability impacts could manifest as denial-of-service conditions where calendar services become completely inaccessible, disrupting all calendar-dependent applications and workflows within the organization's communication infrastructure. This vulnerability particularly affects enterprises that rely heavily on coordinated scheduling and resource management, where calendar data integrity and availability are mission-critical for business continuity.
Mitigation strategies for CVE-2011-3565 should focus on implementing comprehensive access controls and system hardening measures within the Oracle Communications Unified 7.0 environment. Organizations should immediately apply vendor patches and updates when available, as this vulnerability affects a specific version of Oracle's telecommunications software suite. System administrators should implement strict access controls for calendar server components, ensuring that only authorized personnel have administrative privileges and that local user accounts maintain minimal necessary permissions. Network segmentation and monitoring should be enhanced to detect anomalous calendar server activity that might indicate exploitation attempts. The vulnerability's local access requirement suggests that physical security measures and privileged access management should be strengthened to prevent unauthorized system access. Additionally, organizations should implement regular security assessments and penetration testing focused on calendar server functionality to identify potential exploitation vectors and ensure that existing controls remain effective. Compliance with industry standards such as those outlined in the CWE taxonomy for calendar and scheduling system vulnerabilities, and adherence to ATT&CK framework techniques related to privilege escalation and credential access, should guide the remediation process and ongoing security monitoring efforts.