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Ubuntu Security Notice USN-7525-1
May 21, 2025

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

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

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

Software Description:
- tomcat10: Apache Tomcat 10 - Servlet and JSP engine
- tomcat9: Apache Tomcat 9 - Servlet and JSP engine

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 24.04 LTS
  libtomcat10-java                10.1.16-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  tomcat10                        10.1.16-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  libtomcat9-java                 9.0.58-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro
  tomcat9                         9.0.58-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  libtomcat9-java                 9.0.31-1ubuntu0.9+esm1
                                  Available with Ubuntu Pro
  tomcat9                         9.0.31-1ubuntu0.9+esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  libtomcat9-java                 9.0.16-3ubuntu0.18.04.2+esm6
                                  Available with Ubuntu Pro
  tomcat9                         9.0.16-3ubuntu0.18.04.2+esm6
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7525-1
  CVE-2025-24813