CVE-2013-7310 in Rt250i
Summary
by MITRE
The OSPF implementation on Yamaha routers does not consider the possibility of duplicate Link State ID values in Link State Advertisement (LSA) packets before performing operations on the LSA database, which allows remote attackers to cause a denial of service (routing disruption) or obtain sensitive packet information via a crafted LSA packet, a related issue to CVE-2013-0149.
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Analysis
by VulDB Data Team • 08/18/2024
The vulnerability identified as CVE-2013-7310 affects the Open Shortest Path First routing protocol implementation within Yamaha routers, representing a critical flaw in network infrastructure security. This issue resides in the Link State Advertisement processing mechanism where the router fails to validate the uniqueness of Link State ID values before executing database operations. The flaw specifically manifests when routers receive crafted LSA packets containing duplicate Link State ID values, creating a condition where the routing protocol's internal state management becomes compromised. Such a vulnerability directly impacts the integrity of the OSPF routing database and can be exploited by remote attackers to disrupt network operations without requiring authentication or physical access to the affected devices.
The technical nature of this vulnerability stems from inadequate input validation within the OSPF implementation, specifically within the LSA database management subsystem. When duplicate Link State ID values are processed, the router's routing protocol daemon does not properly handle the conflict resolution mechanism, leading to unpredictable behavior in the routing table updates. This condition can result in the router's inability to properly process subsequent routing information, causing routing instability and potential network partitioning. The vulnerability operates at the network layer protocol implementation level, specifically affecting the OSPF protocol's database synchronization and maintenance functions. According to CWE classification, this represents a weakness in the validation of input data, specifically CWE-20, which deals with improper input validation, and CWE-129, which addresses insufficient validation of length of inputs.
The operational impact of CVE-2013-7310 extends beyond simple service disruption to potentially expose sensitive routing information and create security risks for network infrastructure. Remote attackers can exploit this vulnerability to perform denial of service attacks against network services by sending specially crafted LSA packets that trigger the router's flawed processing logic. The resulting routing disruption can cause network traffic to be rerouted through suboptimal paths or completely fail, leading to service degradation or complete network outages. Additionally, the vulnerability may allow attackers to extract sensitive routing information from the affected routers, potentially revealing network topology details and routing table contents that could be used in subsequent attacks. This aligns with ATT&CK technique T1590, which involves reconnaissance techniques for network infrastructure, and T1499, which covers network disruption attacks targeting infrastructure.
Mitigation strategies for this vulnerability require immediate attention from network administrators and security teams responsible for maintaining Yamaha router infrastructure. The primary recommendation involves applying firmware updates from Yamaha that address the LSA duplicate ID validation issue, ensuring that all affected routers receive the patched software versions. Network segmentation and access control measures should be implemented to limit exposure of OSPF routing traffic to trusted networks only, reducing the attack surface available to potential adversaries. Monitoring and logging of OSPF routing traffic should be enhanced to detect anomalous LSA packet patterns that may indicate exploitation attempts. Network administrators should also consider implementing OSPF authentication mechanisms to prevent unauthorized routers from participating in the routing protocol, thereby reducing the risk of malicious LSA packet injection. The vulnerability demonstrates the importance of robust input validation in network protocol implementations and highlights the need for comprehensive security testing of routing protocol stacks before deployment in production environments.