A tomcat8 security update has been released for Debian GNU/Linux 8 LTS to address several security vulnerabilities in the Tomcat servlet and JSP engine.

DLA 2286-1: tomcat8 security update

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Debian LTS Advisory DLA-2286-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Markus Koschany
July 22, 2020   https://wiki.debian.org/LTS
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Package : tomcat8
Version : 8.5.54-0+deb9u3
CVE ID : CVE-2020-13934 CVE-2020-13935

Several security vulnerabilities have been discovered in the Tomcat
servlet and JSP engine.

CVE-2020-13934

An h2c direct connection to Apache Tomcat did not release the
HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient
number of such requests were made, an OutOfMemoryException could
occur leading to a denial of service.

CVE-2020-13935

The payload length in a WebSocket frame was not correctly validated
in Apache Tomcat. Invalid payload lengths could trigger an infinite
loop. Multiple requests with invalid payload lengths could lead to a
denial of service.

For Debian 9 stretch, these problems have been fixed in version
8.5.54-0+deb9u3.

We recommend that you upgrade your tomcat8 packages.

For the detailed security status of tomcat8 please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/tomcat8

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS