Rule Document 1:66711

Rule Category

SERVER-OTHER -- Snort has detected traffic exploiting vulnerabilities in a server in the network.

Alert Message

SERVER-OTHER ISC BIND DHCP client DNAME resource record parsing denial of service attempt

Rule Explanation

This rule looks for DNS response packets that contain a DNAME resource record positioned after other records, a pattern indicative of the known parsing flaw. Successful exploitation can cause the DHCP client to crash or become unresponsive, resulting in a denial of service.

What To Look For

This rule fires on attempts to exploit a denial of service vulnerability in ISC BIND DHCP client software via crafted DNS responses.

Known Usage

Public information/Proof of Concept available

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

Rule Categories::Server::Other

MITRE::ATT&CK Framework::Enterprise::Impact::Endpoint Denial of Service::Application or System Exploitation

Rule Categories::Protocol::DNS

Vulnerability::Severity::Medium

Vendors + Products::Debian::Linux

Vendors + Products::NetApp::Cloud Services

Vulnerability::Severity::Critical

Vendors + Products::NetApp::SolidFire HCI

Vendors + Products::Red Hat::Enterprise Linux

Vulnerability::Severity::High

Vendors + Products::NetApp::ONTAP

CVE

CVE-2016-8864

Rule Vulnerability

Denial of Service

Denial of Service attacks aim to make a server or program unresponsive for users. These attacks may be volume-based, to overwhelm the system, or they may use certain logical flaws in the software to cut the service off from the users. The attack may come from one or multiple sources. These attacks do not usually lead to a remote code execution. Volume based attacks are best handled using a firewall application.

CVE Additional Information

This product uses data from the NVD API but is not endorsed or certified by the NVD.

CVE-2016-8864

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