Sign In
- Platform
- Solutions
- Modern NDR
- Resources
- Company
Platform
Modern NDR
Resources
Company
Platform
Modern NDR
Resources
Company
DETECTION OVERVIEW
Risk Factors
The Bad Neighbor vulnerability is well known, but vulnerable Windows devices might not be accessible from the internet or have IPv6 enabled. Because working remote code execution (RCE) exploit code is not publicly available, an attacker must write and test their own RCE exploit code. A successful exploit can give an attacker complete control of a device or cause a system error.
Category
The Neighbor Discovery Protocol (NDP) facilitates host-router discovery and DNS configuration for IPv6 addresses. NDP defines ICMPv6 message types, which helps to identify relationships between devices in an IPv6 network. One of these message types is a Router Advertisement (message type 134), which includes an Recursive DNS Server (RDNSS) option for including DNS server information. The Windows TCP/IP stack has a vulnerability in how it processes incoming ICMPv6 Router Advertisement packets. An attacker creates a malicious packet with an even value in the Length field of the RDNSS option and sends the packet to the vulnerable Windows device. The even Length value causes the Windows TCP/IP stack to incorrectly calculate the network buffer size for processing the packet data. The result is a buffer overflow that can lead to remote command execution (RCE) or a denial of service (DoS).
Install relevant patches for affected devices
If unable to patch, disable the ICMPv6 Recursive DNS Server (RDNSS) option on Windows 10 and Windows Server version 1709 and later
Network analysis and visibility solutions remain underrepresented in enterprises. Find out why in this preview of a new Wave report.
ExtraHop® Named a Leader in First-Ever Gartner® Magic Quadrant™ for Network Detection and Response
Visit this resource for more information.
This analysis exposes the critical link between an organization's lack of internal visibility and the escalating cost of compromise, demanding an urgent re-evaluation of how core business assets are protected.
Learn why you need to be wary of the claims certain network detection and response providers make about their coverage against the MITRE ATT&CK framework.
Learn how NDR from RevealX helps security teams detect and investigate more adversary TTPs in the MITRE ATT&CK framework than rule-based tools.
