CVE-2015-2081 in ALTO
Summary
by MITRE
Datto ALTO and SIRIS devices allow Remote Code Execution via unauthenticated requests to PHP scripts.
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Analysis
by VulDB Data Team • 01/07/2020
The vulnerability identified as CVE-2015-2081 affects Datto ALTO and SIRIS network security appliances, representing a critical remote code execution flaw that enables attackers to execute arbitrary commands on affected devices without requiring authentication. This vulnerability resides within the web interface components of these security appliances, specifically targeting PHP scripts that process incoming requests. The flaw allows unauthorized remote attackers to submit malicious requests that bypass authentication mechanisms entirely, providing direct access to system command execution capabilities. The affected devices are commonly deployed in enterprise environments for network security monitoring and threat detection, making this vulnerability particularly concerning from a cybersecurity perspective.
The technical implementation of this vulnerability stems from improper input validation and authentication bypass mechanisms within the PHP-based web interface of Datto's security appliances. When unauthenticated requests are sent to specific PHP endpoints, the system fails to properly validate the origin or intent of these requests, allowing attackers to inject and execute arbitrary code within the device's operating environment. This weakness aligns with CWE-284, which addresses improper access control vulnerabilities, and represents a classic example of insufficient authentication checks in web applications. The vulnerability exists due to the lack of proper session management and authentication verification before processing potentially dangerous input parameters that could lead to command injection attacks.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it provides attackers with complete control over the affected security appliances. Once exploited, adversaries can manipulate network traffic monitoring capabilities, alter security policies, disable protective measures, and potentially use the compromised devices as stepping stones for further attacks within the network. This represents a significant threat to network security infrastructure, as these appliances are designed to protect against external threats while simultaneously becoming vulnerable to remote exploitation. The vulnerability affects the availability, integrity, and confidentiality of network security services, potentially allowing attackers to exfiltrate sensitive data or disrupt network operations.
Organizations affected by this vulnerability should immediately implement mitigations including network segmentation to isolate affected devices from critical network segments, applying manufacturer-provided patches or firmware updates, and implementing network monitoring to detect suspicious traffic patterns. The use of web application firewalls and intrusion detection systems can help identify and block exploitation attempts targeting these specific PHP endpoints. Additionally, network administrators should consider disabling unnecessary web services and implementing strict access controls to limit exposure. This vulnerability demonstrates the importance of proper authentication implementation and input validation in network security appliances, as outlined in the ATT&CK framework's defense evasion techniques. Organizations should also conduct thorough vulnerability assessments to identify similar authentication bypass issues in other network security devices and ensure that security updates are applied promptly to maintain operational security posture.