CVE-2014-3362 in Telepresence System Software
Summary
by MITRE
Memory leak in Cisco TelePresence System Edge MXP Series Software F9.3.3 and earlier allows remote attackers to cause a denial of service (management outage) via multiple TELNET connections, aka Bug ID CSCuo63677.
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Analysis
by VulDB Data Team • 03/29/2022
The vulnerability identified as CVE-2014-3362 represents a critical memory leak flaw affecting Cisco TelePresence System Edge MXP Series devices running software versions F9.3.3 and earlier. This issue specifically manifests through the Telnet protocol implementation within the device management interface, creating a pathway for remote attackers to exploit the system's memory management capabilities. The vulnerability resides in the device's handling of multiple concurrent Telnet connections, where each connection fails to properly release allocated memory resources upon termination, leading to progressive memory consumption over time.
The technical nature of this flaw aligns with CWE-401, which catalogs memory leak vulnerabilities in software systems. When multiple Telnet connections are established and maintained simultaneously, each connection consumes memory resources that should be reclaimed upon session closure. However, the MXP Series software fails to execute proper memory deallocation procedures, causing memory fragments to accumulate within the system's heap. This memory accumulation eventually leads to system instability and complete service unavailability, as the device exhausts its available memory resources. The vulnerability operates at the application layer of the network stack, making it particularly dangerous as it requires no authentication or privileged access to exploit.
The operational impact of this vulnerability extends beyond simple service disruption to encompass complete management outages that can severely compromise enterprise communication infrastructure. Organizations relying on Cisco TelePresence systems for critical business communications face significant risks when this vulnerability exists in their network environment. The denial of service condition affects not only the availability of the TelePresence management interface but also potentially impacts the overall system performance and reliability. Attackers can maintain persistent connections to the device, gradually consuming memory resources until the system becomes unresponsive and requires manual intervention or reboot to restore normal operations. This vulnerability particularly affects enterprise networks where TelePresence systems are deployed for video conferencing, collaboration, and remote communication services.
Mitigation strategies for CVE-2014-3362 should prioritize immediate software updates to version F9.3.4 or later, which contains the necessary patches to address the memory leak issue. Network administrators should implement access controls to limit Telnet access to only authorized personnel and consider disabling Telnet protocol entirely in favor of more secure alternatives such as SSH. The implementation of connection limiting mechanisms and monitoring systems can help detect anomalous connection patterns that may indicate exploitation attempts. Additionally, organizations should conduct regular vulnerability assessments and maintain up-to-date patch management procedures to prevent similar issues from occurring in other network components. This vulnerability demonstrates the importance of proper resource management in embedded systems and highlights the need for continuous security monitoring and proactive remediation measures as outlined in the ATT&CK framework's defense evasion and resource hijacking tactics.