CVE-2023-4464 in Trio 8300
Summary
by MITRE • 12/29/2023
A vulnerability, which was classified as critical, has been found in Poly Trio 8300, Trio 8500, Trio 8800, Trio C60, CCX 350, CCX 400, CCX 500, CCX 505, CCX 600, CCX 700, EDGE E100, EDGE E220, EDGE E300, EDGE E320, EDGE E350, EDGE E400, EDGE E450, EDGE E500, EDGE E550, VVX 101, VVX 150, VVX 201, VVX 250, VVX 300, VVX 301, VVX 310, VVX 311, VVX 350, VVX 400, VVX 401, VVX 410, VVX 411, VVX 450, VVX 500, VVX 501, VVX 600 and VVX 601. This issue affects some unknown processing of the component Diagnostic Telnet Mode. The manipulation leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. It is recommended to upgrade the affected component. The identifier VDB-249257 was assigned to this vulnerability.
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Analysis
by VulDB Data Team • 01/21/2024
This critical vulnerability exists within Poly communication devices including various Trio and VVX series endpoints, where a flaw in the Diagnostic Telnet Mode component allows for operating system command injection. The vulnerability stems from improper input validation within the diagnostic telnet interface, which permits attackers to execute arbitrary commands on the affected devices with the privileges of the telnet service account. This represents a significant security risk as it provides an attack surface that can be exploited remotely without requiring authentication, making it particularly dangerous for enterprise environments where these devices are commonly deployed.
The technical exploitation of this vulnerability occurs through the manipulation of diagnostic telnet mode parameters, where insufficient sanitization of user inputs allows for command injection attacks. Attackers can leverage this flaw to execute malicious commands on the underlying operating system, potentially gaining full control over the device and its network connectivity. The vulnerability's remote exploitability means that attackers can target these devices from outside the network perimeter, making it particularly concerning for organizations that have these endpoints exposed to the internet or have inadequate network segmentation. This aligns with CWE-77 which identifies command injection vulnerabilities as a critical class of weakness.
The operational impact of this vulnerability extends beyond simple device compromise, as it can enable attackers to establish persistent access points within network environments, potentially leading to lateral movement and further exploitation. Organizations utilizing these Poly devices may face unauthorized access to sensitive communication data, network reconnaissance activities, and potential disruption of critical communication services. The vulnerability affects a broad range of Poly endpoints, suggesting that organizations with diverse communication infrastructures may be simultaneously at risk, requiring coordinated remediation efforts across multiple device types.
Mitigation strategies should prioritize immediate firmware upgrades from Poly to address the underlying vulnerability in the diagnostic telnet mode implementation. Network segmentation and access control measures should be implemented to restrict remote access to these devices, while disabling unnecessary services such as telnet mode when not actively required for diagnostics. Organizations should also implement monitoring solutions to detect anomalous network activity that may indicate exploitation attempts. The ATT&CK framework categorizes this vulnerability under privilege escalation and command execution techniques, emphasizing the need for comprehensive network security controls and regular vulnerability assessments to prevent successful exploitation. Additionally, implementing zero-trust network principles and maintaining updated security patches across all networked devices will help reduce the attack surface and prevent similar vulnerabilities from being exploited in the future.