Ubuntu 6905-1: Rack Security Advisory Updates
Rack could be made to consume resources and cause long delays if it processed certain input.
Summary
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Rack could be made to consume resources and cause long delays if it processed certain input. Software Description: - ruby-rack: modular Ruby webserver interface Details: It was discovered that Rack incorrectly handled certain regular expressions. A remote attacker could possibly use this issue to cause Rack to consume resources, leading to a denial of service. (CVE-2023-27539) It was discovered that Rack incorrectly handled Multipart MIME parsing. A remote attacker could possibly use this issue to cause Rack to consume resources, leading to a denial of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-27530)
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS ruby-rack 2.1.4-5ubuntu1+esm4 Available with Ubuntu Pro Ubuntu 20.04 LTS ruby-rack 2.0.7-2ubuntu0.1+esm4 Available with Ubuntu Pro Ubuntu 18.04 LTS ruby-rack 1.6.4-4ubuntu0.2+esm5 Available with Ubuntu Pro Ubuntu 16.04 LTS ruby-rack 1.6.4-3ubuntu0.2+esm5 Available with Ubuntu Pro Ubuntu 14.04 LTS ruby-rack 1.5.2-3+deb8u3ubuntu1~esm7 Available with Ubuntu Pro After a standard system update you need to restart any applications using Rack to make all the necessary changes.
References
https://ubuntu.com/security/notices/USN-6905-1
CVE-2023-27530, CVE-2023-27539
![Dist Ubuntu](/images/distros/dist-ubuntu.png)
Package Information