==========================================================================
Ubuntu Security Notice USN-7366-1
March 24, 2025

ruby-rack vulnerabilities
==========================================================================

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

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Rack.

Software Description:
- ruby-rack: modular Ruby webserver interface

Details:

Nhật Thái Đỗ discovered that Rack incorrectly handled certain usernames. A
remote attacker could possibly use this issue to perform CRLF injection.
(CVE-2025-25184)

Phạm Quang Minh discovered that Rack incorrectly handled certain headers. A
remote attacker could possibly use this issue to perform log injection.
(CVE-2025-27111)

Phạm Quang Minh discovered that Rack did not properly handle relative file
paths. A remote attacker could potentially exploit this to include local
files that should have been inaccessible. (CVE-2025-27610)

Update instructions:

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

Ubuntu 24.10
  ruby-rack                       2.2.7-1.1ubuntu0.1

Ubuntu 24.04 LTS
  ruby-rack                       2.2.7-1ubuntu0.2

Ubuntu 22.04 LTS
  ruby-rack                       2.1.4-5ubuntu1.1+esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  ruby-rack                       2.0.7-2ubuntu0.1+esm6
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  ruby-rack                       1.6.4-4ubuntu0.2+esm7
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  ruby-rack                       1.6.4-3ubuntu0.2+esm7
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  ruby-rack                       1.5.2-3+deb8u3ubuntu1~esm9
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7366-1
  CVE-2025-25184, CVE-2025-27111, CVE-2025-27610

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