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Ubuntu 24.04 LTS: Tomcat Moderate Auth Bypass Denial of Service USN-7705-1

ubuntu
Calendar Grey August 20, 2025
Dist Ubuntu Esm H88
Multiple vulnerabilities in Tomcat on Ubuntu patched, impacting security and performance. Upgrade immediately for safety.
Several security issues were fixed in Tomcat.

Summary

Several security issues were fixed in Tomcat.

Software Description:

- tomcat10: Servlet and JSP engine

Details:

It was discovered that Tomcat did not correctly handle case sensitivity.

An attacker could possibly use this issue to bypass authentication

mechanisms. (CVE-2025-46701)

Elysee Franchuk discovered that Tomcat did not correctly limit the number

of attributes for a session. An attacker could possibly use this issue to

cause a denial of service. This issue only affected Ubuntu 24.04 LTS.

(CVE-2024-54677)

It was discovered that Tomcat did not correctly sanitize certain URLs. An

attacker could possibly use this issue to bypass authentication

mechanisms. (CVE-2025-31651)

It was discovered that Tomcat did not correctly handle certain malformed

HTTP headers,

which could lead to a memory leak. An attacker could possibly use this

issue to cause a denial of service. This issue only affected

Ubuntu 24.04 LTS. (CVE-2025-31650)

It was discovered that Tomcat did not correctly hand...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu tomcat authentication bypass session handling

Update Instructions

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

Ubuntu 25.04
  libtomcat10-java                10.1.35-1ubuntu0.1
  tomcat10                        10.1.35-1ubuntu0.1

Ubuntu 24.04 LTS
  libtomcat10-java                10.1.16-1ubuntu0.1~esm3
                                  Available with Ubuntu Pro
  tomcat10                        10.1.16-1ubuntu0.1~esm3
                                  Available with Ubuntu Pro

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

References

https://ubuntu.com/security/notices/USN-7705-1

CVE-2024-50379, CVE-2024-52317, CVE-2024-54677, CVE-2025-31650,

CVE-2025-31651, CVE-2025-46701

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7705-1

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu tomcat authentication bypass session handling

Package Information

https://launchpad.net/ubuntu/+source/tomcat10/10.1.35-1ubuntu0.1

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