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Ubuntu 25.04: USN-7507-1 critical: ruby-rack denial of service

ubuntu
Calendar Grey May 14, 2025
Dist Ubuntu Esm H88
New vulnerability in server architecture permits unwarranted entry and system failures. Guidance issued for Debian users to patch systems.
Rack could be made to crash or allow unintended access to network services.

Summary

Rack could be made to crash or allow unintended access to network services.

Software Description:

- ruby-rack: modular Ruby webserver interface

Details:

It was discovered that Rack incorrectly handled deleted rack sessions. An

attacker could possibly use this issue to expose sensitive information or

to gain unauthorized access to user accounts. (CVE-2025-32441)

It was discovered that Rack incorrectly limited the number of parameters

in a web request. An attacker could possibly use this issue to cause a

denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04

LTS, Ubuntu 24.04 LTS, Ubuntu 24.10, and Ubuntu 25.04. (CVE-2025-46727)

Topics%20covered

Topics Covered

security advisory denial of service access control ubuntu network services ruby-rack

Update Instructions

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

Ubuntu 25.04
  ruby-rack                       2.2.7-1.1ubuntu0.25.04.1

Ubuntu 24.10
  ruby-rack                       2.2.7-1.1ubuntu0.2

Ubuntu 24.04 LTS
  ruby-rack                       2.2.7-1ubuntu0.3

Ubuntu 22.04 LTS
  ruby-rack                       2.1.4-5ubuntu1.1+esm2
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  ruby-rack                       2.0.7-2ubuntu0.1+esm7
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  ruby-rack                       1.6.4-4ubuntu0.2+esm8
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  ruby-rack                       1.6.4-3ubuntu0.2+esm8
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  ruby-rack                       1.5.2-3+deb8u3ubuntu1~esm10
                                  Available with Ubuntu Pro

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

References

https://ubuntu.com/security/notices/USN-7507-1

CVE-2025-32441, CVE-2025-46727

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7507-1

Topics%20covered

Topics Covered

security advisory denial of service access control ubuntu network services ruby-rack

Package Information

https://launchpad.net/ubuntu/+source/ruby-rack/2.2.7-1.1ubuntu0.25.04.1
https://launchpad.net/ubuntu/+source/ruby-rack/2.2.7-1.1ubuntu0.2
https://launchpad.net/ubuntu/+source/ruby-rack/2.2.7-1ubuntu0.3

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