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Ubuntu Security Notice USN-7469-2
April 28, 2025

tomcat8 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

Apache Tomcat could be made to crash if it received specially crafted
network traffic.

Software Description:
- tomcat8: Servlet and JSP engine

Details:

USN-7469-1 fixed a vulnerability in Apache Traffic Server. This
update provides the corresponding updates for Apache Tomcat.

Original advisory details:

 It was discovered that Apache Traffic Server exhibited poor server
 resource management in its HTTP/2 protocol. An attacker could possibly
 use this issue to cause Apache Traffic Server to crash, resulting in
 a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS
  libtomcat8-embed-java           8.5.39-1ubuntu1~18.04.3+esm4
                                  Available with Ubuntu Pro
  libtomcat8-java                 8.5.39-1ubuntu1~18.04.3+esm4
                                  Available with Ubuntu Pro
  tomcat8                         8.5.39-1ubuntu1~18.04.3+esm4
                                  Available with Ubuntu Pro

After a standard system update you need to restart Apache Tomcat to
make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7469-2
  https://ubuntu.com/security/notices/USN-7469-1
  CVE-2023-44487