CVE-2013-7314 in Ip38x 1000
Summary
by MITRE
The OSPF implementation on NEC IP38X, IX1000, IX2000, and IX3000 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-2013-7314 affects the open shortest path first implementation in several NEC router models including the IP38X, IX1000, IX2000, and IX3000 series. This issue represents a significant flaw in the routing protocol handling mechanism that directly impacts network stability and security. The vulnerability stems from insufficient validation of Link State Advertisement packet contents within the OSPF database management system, creating an exploitable condition that can be leveraged by remote attackers to disrupt network operations.
The technical flaw manifests in the OSPF implementation's failure to properly validate Link State ID values when processing incoming LSA packets. This validation gap allows malicious actors to craft specially designed LSA packets containing duplicate Link State ID values that the router's processing logic does not adequately handle. According to CWE-129, this vulnerability represents an input validation weakness where the system fails to properly validate or sanitize input data before processing. The router's OSPF daemon processes these malformed packets without sufficient checks, leading to unpredictable behavior in the routing database management system.
The operational impact of this vulnerability extends beyond simple denial of service conditions to potentially expose sensitive network information. Remote attackers can exploit this weakness to cause routing disruptions that may result in complete network partitioning or traffic redirection. The vulnerability's relationship to CVE-2013-0149 indicates a broader class of issues within NEC's OSPF implementation, suggesting that similar validation gaps may exist across multiple routing protocol components. This creates a systemic risk that could compromise entire network infrastructures depending on these affected router models.
The attack vector for CVE-2013-7314 is particularly concerning as it requires only remote access to the network to deliver malicious LSA packets. This remote exploit capability means that attackers do not need physical access or network credentials to execute the attack, making it a significant threat to network availability. The vulnerability's potential to expose sensitive packet information adds another layer of risk beyond mere service disruption, potentially allowing attackers to gather intelligence about network topology and routing decisions. Organizations implementing NEC routers in their network infrastructure should consider this vulnerability in their overall security posture assessment.
Mitigation strategies for this vulnerability should include immediate firmware updates from NEC to address the validation gap in LSA packet processing. Network administrators should also implement monitoring solutions that can detect anomalous LSA packet patterns and duplicate Link State ID occurrences. The implementation of OSPF authentication mechanisms and access control lists can provide additional defense-in-depth measures to limit the attack surface. Organizations should also consider implementing network segmentation strategies that isolate critical routing functions from potentially compromised network segments to limit the impact of successful exploitation attempts.