Moderate severity vulnerability that affects org.apache.tomcat.embed:tomcat-embed-core

2019-04-18T14:50:19
ID GHSA-R53M-PFR5-7V87
Type github
Reporter GitHub Advisory Database
Modified 2019-07-03T21:02:07

Description

The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.