Launch Week Day 1: Announcing Security Design Review
HIGH 7.5 Maven

Improper Locking in Apache Tomcat

GHSA-q4hg-rmq2-52q9 · CVE-2019-10072

Published · Modified

Description

The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.

References

Ready to move

Start Securing

Free, no credit card | First findings in minutes