PROTOCOL-ICMP -- Snort alerted on Internet Control Message Protocol (ICMP) traffic, which allows hosts to send error messages about interruptions in traffic. Administrators can use ICMP to perform diagnostics and troubleshooting, but the protocol can also be used by attackers to gain information on a network. This protocol is vulnerable to several attacks, and many administrators block it altogether, or block selective messages.
PROTOCOL-ICMP Microsoft Windows IPv6 stack remote execution attempt
This rule fires upon detection of a crafted ICMPv6 packet option header.
This rule fires upon detection of a crafted ICMPv6 packet which may be used to exploit CVE-2020-16898, a remote code execution vulnerability in the Microsoft Windows IPv6 stack.
No public information
No known false positives
Cisco Talos Intelligence Group
No rule groups
Buffer Overflows occur when a memory location is filled past its expected boundaries. Computer attackers target systems without proper terminating conditions on buffers, which then write the additional information in other locations in memory, overwriting what is there. This could corrupt the data, making the system behave erratically or crash. The new information could include malicious executable code, which might be executed.
CVE-2020-16898A remote code execution vulnerability exists when the Windows TCP/IP stack improperly handles ICMPv6 Router Advertisement packets, aka 'Windows TCP/IP Remote Code Execution Vulnerability'.
Technique: Execution through Module Load
For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org