SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.
SERVER-WEBAPP Apache Tomcat HTTP/2 denial of service attempt
The rule looks for indication of multiple h2c upgrade attempts are made in succession, indicating a potential attempt to exhaust processor resources.
This rule fires upon attempted exploitation of CVE-2020-13934, a denial of service vulnerability of Apache Tomcat.
No public information
No known false positives
Cisco Talos Intelligence Group
No rule groups
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.