CVE-2011-0376 in Telepresence System 3000
Summary
by MITRE
The TFTP implementation on Cisco TelePresence endpoint devices with software 1.2.x through 1.5.x, 1.6.0, and 1.6.1 allows remote attackers to obtain sensitive information via a GET request, aka Bug ID CSCte43876.
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Analysis
by VulDB Data Team • 08/03/2024
The vulnerability identified as CVE-2011-0376 represents a critical information disclosure flaw within the Trivial File Transfer Protocol implementation of Cisco TelePresence endpoint devices. This security weakness affects specific software versions including 1.2.x through 1.5.x, 1.6.0, and 1.6.1, creating a significant risk for organizations utilizing these video conferencing systems. The vulnerability stems from insufficient input validation and access control mechanisms within the TFTP server component that processes remote requests from unauthenticated users. This flaw enables malicious actors to exploit the system through crafted GET requests that can retrieve sensitive data from the device's file system. The vulnerability is classified under CWE-200, which specifically addresses "Information Exposure" and represents a fundamental breakdown in the principle of least privilege. Attackers can leverage this weakness to gain unauthorized access to potentially sensitive configuration files, system logs, and other data that should remain protected within the TelePresence device environment.
The operational impact of this vulnerability extends beyond simple data exposure, as it provides attackers with potential pathways for further exploitation within the network infrastructure. When an attacker successfully exploits this vulnerability, they can obtain confidential information that may include network configuration details, user credentials, system parameters, and other sensitive operational data. The TFTP protocol itself is designed for simple file transfers and typically operates without authentication requirements, making it particularly susceptible to abuse when proper access controls are not implemented. This vulnerability directly relates to ATT&CK technique T1083, which covers "File and Directory Discovery" and represents a common reconnaissance activity that adversaries perform to understand system configurations. The affected Cisco TelePresence devices operate in enterprise environments where they often serve as critical communication endpoints, making the exposure of information from these devices particularly concerning for organizations with sensitive communications infrastructure.
Organizations affected by this vulnerability should implement immediate mitigations to protect their TelePresence infrastructure from exploitation. The primary recommended action involves upgrading the affected Cisco TelePresence devices to software versions that contain patches addressing this specific information disclosure vulnerability. Cisco has released security advisories and software updates specifically targeting this flaw, and organizations should prioritize these updates as part of their vulnerability management processes. Network segmentation strategies should be implemented to limit access to these devices from untrusted networks, while also ensuring that only authorized personnel can access the device management interfaces. Additional protective measures include disabling unnecessary TFTP services when not required, implementing network monitoring to detect anomalous TFTP traffic patterns, and conducting regular security assessments of the TelePresence infrastructure. The vulnerability demonstrates the importance of maintaining current security patches and the risks associated with legacy systems that may not receive ongoing support or updates, particularly in the context of enterprise communication systems where security is paramount for protecting sensitive business communications and data exchanges.