| Severity |
|
| Remote |
|
| Type |
| - |
Unknown |
| + |
Denial of service |
|
| Description |
| + |
A denial of service has been found in Apache Tomcat before 9.0.36 and 8.5.56, where a specially crafted sequence of HTTP/2 requests could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive. |
|
| References |
| + |
https://www.openwall.com/lists/oss-security/2020/06/25/6 |
| + |
https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.36 |
| + |
https://github.com/apache/tomcat/commit/9a0231683a77e2957cea0fdee88b193b30b0c976 |
| + |
https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.56 |
| + |
https://github.com/apache/tomcat/commit/c8acd2ab7371e39aeca7c306f3b5380f00afe552 |
|
| Notes |
|