CVE-2011-0354 in Tandberg Personal Video Unit Software
Summary
by MITRE
The default configuration of Cisco Tandberg C Series Endpoints, and Tandberg E and EX Personal Video units, with software before TC4.0.0 has a blank password for the root account, which makes it easier for remote attackers to obtain access via an unspecified login method.
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Analysis
by VulDB Data Team • 08/03/2024
The vulnerability described in CVE-2011-0354 represents a critical security flaw in Cisco Tandberg video conferencing endpoints that affected multiple device models including C Series Endpoints and Tandberg E and EX Personal Video units. This weakness stems from the default configuration of affected devices where the root account lacks a password setting, creating an easily exploitable entry point for malicious actors. The vulnerability specifically impacts software versions prior to TC4.0.0, indicating that Cisco had identified and addressed this issue in subsequent releases through proper authentication mechanisms.
The technical nature of this flaw aligns with CWE-798, which addresses the use of hard-coded credentials in software systems, and CWE-259, which covers the use of weak password mechanisms. The vulnerability exists at the authentication layer where the system fails to enforce proper access controls for the root administrative account. This blank password configuration creates a default authentication state that allows unauthorized users to gain administrative privileges without requiring any knowledge of legitimate credentials, making the attack surface extremely broad and accessible to anyone with network access to the device.
From an operational perspective, this vulnerability poses significant risks to organizations utilizing Cisco Tandberg video conferencing equipment. The unspecified login method mentioned in the description suggests that attackers could potentially exploit this weakness through various network interfaces or protocols supported by these devices, including web interfaces, telnet, or SSH services. The remote nature of the attack means that adversaries do not require physical access to the devices, enabling them to perform unauthorized administrative actions such as modifying system configurations, accessing sensitive data, or installing malicious software. This vulnerability directly maps to attack techniques described in the MITRE ATT&CK framework under initial access and privilege escalation tactics, where adversaries leverage weak authentication mechanisms to gain unauthorized access to systems.
The impact of this vulnerability extends beyond immediate unauthorized access, as the root account typically provides full administrative control over the device. Attackers could potentially manipulate video conferencing settings, monitor communications, or use the compromised devices as entry points for broader network infiltration. Organizations with multiple affected devices face cascading security risks where a single compromised endpoint could serve as a foothold for lateral movement within their network infrastructure. The vulnerability demonstrates a fundamental security misconfiguration that should never occur in production environments, highlighting the importance of proper default security settings and regular security assessments of networked devices.
Mitigation strategies for this vulnerability primarily involve immediate software updates to TC4.0.0 or later versions where Cisco has implemented proper password enforcement for root accounts. Organizations should also conduct comprehensive inventory assessments to identify all affected devices and ensure that default credentials are changed immediately upon deployment. Network segmentation and access controls should be implemented to limit the exposure of these devices to unauthorized network segments. Additionally, regular security audits and vulnerability assessments should be conducted to identify similar misconfigurations in other networked devices. The remediation process should include verifying that all administrative accounts have strong, unique passwords and that default accounts are disabled or removed from production environments. This vulnerability serves as a critical reminder of the importance of secure configuration management and the necessity of following security best practices for all networked equipment, particularly those used in enterprise communication systems where unauthorized access could result in significant operational and security implications.