CVE-2014-3368 in Expressway Software
Summary
by MITRE
Cisco TelePresence Video Communication Server (VCS) and Expressway Software before X8.2 allow remote attackers to cause a denial of service (device reload) via a high rate of crafted packets, aka Bug ID CSCui06507.
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Analysis
by VulDB Data Team • 03/30/2022
The vulnerability identified as CVE-2014-3368 affects Cisco TelePresence Video Communication Server (VCS) and Expressway software versions prior to X8.2, representing a significant security flaw that enables remote attackers to execute denial of service attacks. This vulnerability resides within the packet processing mechanisms of these communication systems, specifically targeting the handling of crafted network traffic that can trigger system instability and subsequent device reloads. The flaw manifests when the affected systems receive a high volume of specially constructed packets that exploit weaknesses in the protocol handling routines, ultimately leading to complete service disruption.
The technical implementation of this vulnerability stems from insufficient input validation and inadequate rate limiting mechanisms within the network protocol stack of the affected Cisco products. Attackers can leverage this weakness by flooding the system with malformed packets that cause the device to consume excessive resources or trigger internal processing errors. The vulnerability specifically impacts the signaling protocols used in video communication systems, where the VCS and Expressway components process various types of network traffic including SIP messages and H.323 signaling. This flaw operates at the network layer, making it particularly dangerous as it can be exploited from remote locations without requiring physical access or authentication credentials.
From an operational perspective, this vulnerability presents a severe risk to organizations relying on Cisco TelePresence systems for critical video conferencing and communication services. The ability to remotely force device reloads creates substantial business disruption, as video communication infrastructure may become unavailable during critical meetings or emergency communications. The impact extends beyond simple service interruption, as repeated exploitation can lead to system instability, potential data loss, and increased administrative overhead for recovery operations. Organizations using these systems face the risk of extended downtime during peak usage periods, particularly in enterprise environments where video conferencing is integral to business operations.
The mitigation strategies for CVE-2014-3368 involve immediate software updates to versions X8.2 or later, which contain patches addressing the packet processing vulnerabilities. Network administrators should implement rate limiting and access control measures to restrict incoming traffic patterns that could trigger the vulnerability. Additionally, monitoring systems should be configured to detect unusual traffic patterns that may indicate exploitation attempts. This vulnerability aligns with CWE-129, which addresses improper validation of input boundaries, and relates to ATT&CK technique T1498, which covers network denial of service attacks. Organizations should also consider implementing network segmentation and firewall rules to limit exposure of these critical communication systems to untrusted networks, while maintaining regular security assessments to identify potential exploitation vectors.