CVE-2011-2763 in Lifesize Room Appliance Software
Summary
by MITRE
The web interface on the LifeSize Room appliance LS_RM1_3.5.3 (11) and 4.7.18 allows remote attackers to execute arbitrary commands via a modified request to the LSRoom_Remoting.doCommand function in gateway.php.
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Analysis
by VulDB Data Team • 12/28/2024
The CVE-2011-2763 vulnerability represents a critical remote command execution flaw in the LifeSize Room appliance series, specifically affecting models running firmware versions 3.5.3 and 4.7.18. This vulnerability resides within the web interface component of the device, which serves as the primary administrative and operational gateway for users to interact with the appliance. The LifeSize Room appliances are widely deployed in enterprise environments for video conferencing and collaboration purposes, making this vulnerability particularly concerning from a security perspective. The affected system architecture includes the LSRoom_Remoting.doCommand function within the gateway.php file, which processes incoming requests from remote users and administrators.
The technical exploitation mechanism of this vulnerability stems from insufficient input validation and sanitization within the web interface. Attackers can manipulate the LSRoom_Remoting.doCommand function by crafting specially modified requests that bypass normal authentication and authorization checks. This flaw allows unauthenticated remote attackers to execute arbitrary commands on the underlying operating system of the appliance, effectively granting them complete control over the device. The vulnerability is classified as a command injection flaw, which maps directly to CWE-77 and CWE-94 within the Common Weakness Enumeration framework, specifically representing a form of command injection that occurs in a web application context. The root cause lies in the improper handling of user-supplied input within the gateway.php script, where dynamic command execution is performed without adequate sanitization or validation of the input parameters.
The operational impact of this vulnerability extends far beyond simple unauthorized access, as it provides attackers with complete system compromise capabilities. Once exploited, adversaries can gain root-level access to the appliance, enabling them to modify system configurations, install malicious software, exfiltrate sensitive data, or establish persistent backdoors for future access. In enterprise environments where these appliances are used for video conferencing and collaboration, the compromise of a single device can potentially serve as a foothold for broader network infiltration. The vulnerability also poses significant risks to the confidentiality and integrity of communications, as attackers can monitor or manipulate video conferencing sessions. This represents a critical threat vector that aligns with ATT&CK technique T1059.001 for command and script injection, and potentially T1078 for valid accounts usage when attackers can establish persistent access.
Mitigation strategies for CVE-2011-2763 should focus on immediate remediation through firmware updates provided by LifeSize, as this vulnerability was addressed in subsequent firmware releases. Organizations should implement network segmentation to isolate these appliances from critical network segments and apply strict firewall rules to limit access to the appliance's web interface. Additional protective measures include disabling unnecessary services, implementing strong authentication mechanisms, and monitoring network traffic for suspicious patterns indicating exploitation attempts. Security professionals should also conduct thorough vulnerability assessments of all LifeSize appliances in their environment and consider implementing intrusion detection systems to monitor for exploitation attempts. The vulnerability highlights the importance of secure coding practices and input validation in web applications, particularly in embedded systems where remote access capabilities are provided. Organizations should also establish robust patch management procedures to ensure timely deployment of security updates and maintain inventory tracking of all networked devices to prevent similar vulnerabilities from remaining unpatched in production environments.