CVE-2022-20953 in TelePresence Collaboration Endpoint
Summary
by MITRE • 10/26/2022
Multiple vulnerabilities in Cisco TelePresence Collaboration Endpoint (CE) Software and Cisco RoomOS Software could allow an attacker to conduct path traversal attacks, view sensitive data, or write arbitrary files on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
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Analysis
by VulDB Data Team • 11/18/2022
The vulnerability identified as CVE-2022-20953 represents a critical security flaw affecting Cisco TelePresence Collaboration Endpoint software and Cisco RoomOS software implementations. This issue manifests as multiple interconnected vulnerabilities that collectively enable attackers to exploit path traversal mechanisms within the affected systems. The vulnerabilities specifically target the file system access controls and input validation mechanisms present in Cisco's collaboration endpoint software, creating potential entry points for malicious actors seeking unauthorized system access. These software implementations are commonly deployed in enterprise environments for video conferencing and collaboration purposes, making them attractive targets for cyber adversaries seeking to compromise sensitive communication infrastructure.
The technical implementation of this vulnerability stems from inadequate input sanitization and improper file system access controls within the software stack. Attackers can leverage these weaknesses to perform path traversal attacks that allow them to navigate beyond the intended file system boundaries and access restricted directories or files. The flaw specifically affects how the software processes file paths and handles user-supplied input, enabling attackers to manipulate the system's file access mechanisms. Through carefully crafted inputs, adversaries can bypass normal access controls and potentially execute arbitrary file operations including reading sensitive configuration files, system logs, or other confidential data stored on the device. The vulnerability is classified under CWE-22 Path Traversal which is a well-documented weakness in software security that occurs when applications fail to properly validate file paths.
The operational impact of CVE-2022-20953 extends beyond simple data exposure, as it provides attackers with the capability to write arbitrary files to the affected device. This write access enables a range of malicious activities including payload delivery, persistence mechanisms, and system compromise. Organizations utilizing Cisco TelePresence and RoomOS software are particularly vulnerable since these systems often contain sensitive corporate data, authentication credentials, and network configuration information. The attack surface is further expanded when considering that these endpoints frequently operate in network environments where they may have access to internal systems or serve as gateways to corporate networks. The vulnerability can be exploited remotely without requiring authentication, making it particularly dangerous for organizations with limited network segmentation or monitoring capabilities.
Security professionals should implement immediate mitigations including applying the latest Cisco security patches and updates as released through official advisory channels. Network segmentation should be enhanced to limit direct access to affected endpoints, while comprehensive monitoring should be deployed to detect anomalous file access patterns or unauthorized system modifications. The implementation of web application firewalls and input validation controls can provide additional protection layers against path traversal attempts. Organizations should conduct thorough vulnerability assessments of their Cisco endpoint deployments and review system configurations to ensure proper access controls are in place. According to ATT&CK framework, this vulnerability maps to techniques such as T1059 Command and Scripting Interpreter and T1078 Valid Accounts, as attackers could potentially use the compromised systems to establish persistent access or escalate privileges. Regular security audits and penetration testing should be conducted to verify that the implemented mitigations are effective and that no additional vulnerabilities exist in the network infrastructure.