CVE-2000-0379 in R9100
Summary
by MITRE
The Netopia R9100 router does not prevent authenticated users from modifying SNMP tables, even if the administrator has configured it to do so.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 09/29/2024
The CVE-2000-0379 vulnerability affects the Netopia R9100 router, representing a critical security flaw in network management protocols. This vulnerability specifically targets the Simple Network Management Protocol implementation within the router's firmware, where proper access controls have not been enforced for SNMP table modifications. The issue stems from insufficient authorization checks that should prevent authenticated users from making unauthorized changes to system configuration tables through SNMP interfaces.
This technical flaw constitutes a violation of fundamental security principles and can be classified under CWE-284, which deals with improper access control mechanisms. The vulnerability allows for privilege escalation scenarios where legitimate users who have authenticated to the router can manipulate system tables that should only be accessible to administrators or system-level entities. The router's design fails to implement proper role-based access control for SNMP operations, creating a pathway for malicious actors to modify critical network configuration parameters.
The operational impact of this vulnerability is significant as it enables unauthorized modification of router configuration tables through SNMP, potentially leading to complete network compromise. Attackers could exploit this weakness to alter routing tables, modify firewall rules, change user accounts, or manipulate other critical system parameters that control network traffic flow and security policies. This vulnerability directly impacts the integrity and availability of network services, as unauthorized modifications could disrupt network operations or create backdoors for persistent access. The issue affects the router's ability to maintain secure configuration states and can lead to unauthorized network access or data exfiltration.
The vulnerability aligns with ATT&CK technique T1078 which covers valid accounts and T1566 which covers credential harvesting, as it allows for unauthorized configuration changes through legitimate authentication mechanisms. Organizations should implement immediate mitigations including disabling SNMP if not required, implementing strict SNMP access controls with read-only permissions for non-administrative users, and applying firmware updates from Netopia if available. Network segmentation should be employed to isolate critical network infrastructure from general user access, and monitoring should be implemented to detect unauthorized SNMP table modifications. The vulnerability also highlights the importance of proper input validation and access control enforcement in network device management interfaces, emphasizing the need for comprehensive security testing of network infrastructure components.