CVE-2015-9254 in ALTO
Summary
by MITRE
Datto ALTO and SIRIS devices have a default VNC password.
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Analysis
by VulDB Data Team • 01/07/2020
The vulnerability identified as CVE-2015-9254 affects Datto ALTO and SIRIS network security appliances, representing a critical configuration flaw that exposes these devices to unauthorized remote access. These appliances are designed to provide network security monitoring and management capabilities for enterprise environments, yet they ship with hardcoded default credentials that remain unchanged in many deployments. The presence of default passwords creates a persistent attack surface that adversaries can exploit immediately upon network discovery, bypassing any authentication mechanisms that should normally protect these critical infrastructure components.
This vulnerability stems from poor security practices during device manufacturing and deployment, where default administrative credentials are not properly disabled or changed during initial setup. The default VNC password configuration represents a fundamental failure in the principle of least privilege, as it provides unrestricted remote access to the device's graphical interface with full administrative privileges. According to CWE-798, this vulnerability falls under the category of using hardcoded credentials, which is a well-documented weakness that has been consistently flagged in security assessments and penetration testing reports. The flaw allows attackers to establish remote sessions without requiring any additional authentication factors or prior knowledge of legitimate user credentials.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it enables attackers to gain complete control over the network monitoring and security functions provided by these appliances. Once compromised, adversaries can manipulate network traffic monitoring capabilities, disable security features, redirect traffic, or establish persistent backdoors within the network infrastructure. This compromise directly violates the integrity and availability principles of information security, as the device becomes a potential pivot point for lateral movement throughout the network. The vulnerability aligns with ATT&CK technique T1075 which describes using legitimate credentials to gain access to systems, and T1021.001 which covers remote services such as VNC connections that can be leveraged for lateral movement and privilege escalation.
Organizations deploying Datto ALTO and SIRIS devices must implement immediate remediation measures to address this vulnerability, including changing default passwords to strong, unique credentials and disabling unused services such as VNC access. Network segmentation and access controls should be implemented to limit exposure of these devices to internal network segments, while regular security audits should verify that default configurations have been properly addressed. The vulnerability also highlights the importance of secure device lifecycle management, where initial setup procedures include mandatory credential changes and security hardening steps. Additionally, organizations should consider implementing network monitoring solutions that can detect unauthorized VNC connections and alert security teams to potential compromise attempts. This vulnerability demonstrates the critical need for security awareness in device deployment processes and the importance of following security baselines and configuration standards that prevent the use of default credentials in production environments.