USN-7507-1: Rack vulnerabilities

USN-7507-1: Rack vulnerabilities
Publication date: 12 May 2025
Overview: Rack could be made to crash or allow unintended access to network services.
Releases: 25.04, 24.10, 24.04 LTS, 22.04 LTS, 20.04 LTS, 18.04LTS, 16.04 LTS, 14.04LTS

Packages
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)

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

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

• 25.04 plucky ruby-rack – 2.2.7-1.1ubuntu0.25.04.1
• 24.10 oracular ruby-rack – 2.2.7-1.1ubuntu0.2
• 24.04 noble ruby-rack – 2.2.7-1ubuntu0.3
• 22.04 jammy ruby-rack – 2.1.4-5ubuntu1.1+esm2
• 20.04 focal ruby-rack – 2.0.7-2ubuntu0.1+esm7
• 18.04 bionic ruby-rack – 1.6.4-4ubuntu0.2+esm8
• 16.04 xenial ruby-rack – 1.6.4-3ubuntu0.2+esm8
• 14.04 trusty ruby-rack – 1.5.2-3+deb8u3ubuntu1~esm10