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Ubuntu Security Notice USN-7525-2
May 26, 2025

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

- Ubuntu 25.04
- Ubuntu 24.10
- Ubuntu 24.04 LTS

Summary:

Tomcat could expose sensitive files or run programs if it received
specially crafted network traffic.

Software Description:
- tomcat9: Apache Tomcat 9 - Servlet and JSP engine

Details:

USN-7525-1 fixed CVE-2025-24813 for tomcat9 in Ubuntu 22.04 LTS,
Ubuntu 20.04 LTS, and Ubuntu 18.04 LTS. This update fixes it for
tomcat9 in Ubuntu 24.04 LTS, Ubuntu 24.10, and Ubuntu 25.10. 
These versions include only the tomcat library (libtomcat9-java)
and not the full tomcat server stack.

Original advisory details:

It was discovered that Apache Tomcat incorrectly implemented partial
PUT functionality by replacing path separators with dots in temporary
files. A remote attacker could possibly use this issue to access 
sensitive files, inject malicious content, or execute remote code.

Update instructions:

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

Ubuntu 25.04
  libtomcat9-java                 9.0.70-2ubuntu1.25.04.1

Ubuntu 24.10
  libtomcat9-java                 9.0.70-2ubuntu1.24.10.1

Ubuntu 24.04 LTS
  libtomcat9-java                 9.0.70-2ubuntu0.1+esm1
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7525-2
  https://ubuntu.com/security/notices/USN-7525-2
  CVE-2025-24813

Package Information:
  https://launchpad.net/ubuntu/+source/tomcat9/9.0.70-2ubuntu1.25.04.1
  https://launchpad.net/ubuntu/+source/tomcat9/9.0.70-2ubuntu1.24.10.1