CVE-2025-24813

Path Equivalence: ‘file.Name’ (Internal Dot) leading to Remote Code Execution and/or Information disclosure and/or malicious content added to uploaded files via write enabled Default Servlet in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.2, from 10.1.0-M1 through 10.1.34, from 9.0.0.M1 through 9.0.98. If all of the following were true, a malicious user was able to view security sensitive files and/or inject content into those files: - writes enabled for the default servlet (disabled by default) - support for partial PUT (enabled by default) - a target URL for security sensitive uploads that was a sub-directory of a target URL for public uploads - attacker knowledge of the names of security sensitive files being uploaded - the security sensitive files also being uploaded via partial PUT If all of the following were true, a malicious user was able to perform remote code execution: - writes enabled for the default servlet (disabled by default) - support for partial PUT (enabled by default) - application was using Tomcat’s file based session persistence with the default storage location - application included a library that may be leveraged in a deserialization attack Users are recommended to upgrade to version 11.0.3, 10.1.35 or 9.0.99, which fixes the issue.

Read the notes from the security team

Mitigation

Ubuntu Security team is working on the patch, till patched, do either of the following: - Disable write access for the servlet: update web.xml with readonly=true for the default servlet - Disable support for partial PUT: update web.xml with allowPartialPut=false for the default servlet

• How can I get the fixes?
• What do statuses mean?

Notes

References

• MITRE
• NVD
• Launchpad
• Debian

Other references

• https://www.cve.org/CVERecord?id=CVE-2025-24813
• https://lists.apache.org/thread/j5fkjv2k477os90nczf2v9l61fb0kkgq
• http://www.openwall.com/lists/oss-security/2025/03/10/5
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog