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Apache Tomcat: Important: Denial of Service (CVE-2019-10072)

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Apache Tomcat: Important: Denial of Service (CVE-2019-10072)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
06/21/2019
Created
06/22/2019
Added
06/21/2019
Modified
06/27/2019

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.

Solution(s)

  • apache-tomcat-upgrade-8_5_41
  • apache-tomcat-upgrade-9_0_20

References

  • apache-tomcat-upgrade-8_5_41
  • apache-tomcat-upgrade-9_0_20

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