CVE-2007-1532 in Windows
Summary
by MITRE
The neighbor discovery implementation in Microsoft Windows Vista allows remote attackers to conduct a redirect attack by (1) responding to queries by sending spoofed Neighbor Advertisements or (2) blindly sending Neighbor Advertisements.
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Analysis
by VulDB Data Team • 09/17/2018
The vulnerability described in CVE-2007-1532 resides within the neighbor discovery protocol implementation of Microsoft Windows Vista operating systems, specifically targeting the IPv6 networking stack. This flaw represents a critical security weakness that enables remote attackers to manipulate network routing behaviors through deliberate spoofing of network neighbor advertisements. The vulnerability is particularly concerning as it affects the foundational network protocols that govern how devices discover and communicate with each other on local networks, potentially allowing adversaries to redirect network traffic to malicious endpoints. The neighbor discovery protocol in IPv6 is designed to allow hosts and routers to determine the link-layer address of neighboring nodes and to detect address conflicts, but Windows Vista's implementation lacks proper validation mechanisms for incoming neighbor advertisements.
The technical exploitation of this vulnerability occurs through two distinct attack vectors that leverage the lack of proper authentication and validation in the neighbor discovery process. Attackers can conduct redirect attacks by either responding to legitimate neighbor solicitation messages with spoofed neighbor advertisement packets that contain false link-layer addresses, or by blindly sending neighbor advertisement packets to the target network without waiting for solicitation requests. This dual approach provides attackers with flexibility in their attack methodology, as the first vector requires active monitoring of network traffic while the second allows for more opportunistic attacks that can be executed without prior reconnaissance. The flaw essentially allows an attacker to insert themselves into the network routing table of vulnerable Windows Vista systems, potentially enabling man-in-the-middle attacks, traffic interception, or complete network disruption.
The operational impact of this vulnerability extends beyond simple network disruption to encompass serious security implications for enterprise environments. When exploited successfully, the redirect attack can cause legitimate network traffic to be rerouted through attacker-controlled systems, potentially enabling passive traffic monitoring, active data interception, or even complete network isolation of affected systems. This vulnerability directly impacts the integrity of network communications and can compromise the confidentiality and availability of network resources. Organizations running Windows Vista systems are particularly vulnerable as the attack can be executed remotely without requiring local network access or authentication credentials. The consequences can be severe in corporate environments where network integrity is paramount, as attackers could potentially redirect sensitive traffic to malicious endpoints or disrupt critical business operations.
Mitigation strategies for this vulnerability should focus on implementing proper network security controls and protocol validation mechanisms. Network administrators should deploy network access control lists and firewall rules that restrict neighbor advertisement traffic to trusted sources only, while also implementing network segmentation to limit the scope of potential attacks. The most effective long-term solution involves upgrading to newer operating systems that properly implement the IPv6 neighbor discovery protocol with adequate validation mechanisms, as Windows Vista has reached end-of-life and no longer receives security updates. Organizations should also consider implementing network monitoring solutions that can detect anomalous neighbor advertisement traffic patterns and alert administrators to potential attacks. Additionally, the implementation of secure network protocols such as 802.1X authentication and dynamic host configuration protocol version 6 with proper security measures can provide additional layers of protection against such attacks. This vulnerability aligns with CWE-284, which addresses improper access control in network protocols, and maps to ATT&CK technique T1071.004 for application layer protocol usage in network communication manipulation.