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Ubuntu Security Notice USN-7410-1
April 07, 2025

tomcat9 vulnerability
==========================================================================

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Tomcat could be made to consume resources if it received specially crafted
network traffic.

Software Description:
- tomcat9: Servlet and JSP engine

Details:

It was discovered that Tomcat incorrectly handled request cancellation. A
remote attacker could possibly use this issue to cause tomcat9 to consume
resources, leading to a denial of service.

Update instructions:

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

Ubuntu 22.04 LTS
  tomcat9-common                  9.0.58-1ubuntu0.2

Ubuntu 20.04 LTS
  tomcat9-common                  9.0.31-1ubuntu0.9

Ubuntu 18.04 LTS
  tomcat9-common                  9.0.16-3ubuntu0.18.04.2+esm5
				  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7410-1
  CVE-2023-44487

Package Information:
  https://launchpad.net/ubuntu/+source/tomcat9/9.0.58-1ubuntu0.2
  https://launchpad.net/ubuntu/+source/tomcat9/9.0.31-1ubuntu0.9