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Ubuntu Security Notice USN-6837-1
June 17, 2024

ruby-rack vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS
- Ubuntu 23.10

Summary:

Several security issues were fixed in Rack.

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

Details:

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
23.10. (CVE-2023-27530)

It was discovered that Rack incorrectly parsed certain media types. A
remote attacker could possibly use this issue to cause Rack to consume
resources, leading to a denial of service. (CVE-2024-25126)

It was discovered that Rack incorrectly handled certain Range headers. A
remote attacker could possibly use this issue to cause Rack to create large
responses, leading to a denial of service. This issue only affected Ubuntu
24.04 LTS. (CVE-2024-26141)

It was discovered that Rack incorrectly handled certain crafted headers. 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
24.04 LTS. (CVE-2024-26146)

Update instructions:

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

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

Ubuntu 23.10
   ruby-rack                       2.2.4-3ubuntu0.2

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-6837-1
   CVE-2023-27530, CVE-2024-25126, CVE-2024-26141, CVE-2024-26146

Package Information:
   https://launchpad.net/ubuntu/+source/ruby-rack/2.2.7-1ubuntu0.1
   https://launchpad.net/ubuntu/+source/ruby-rack/2.2.4-3ubuntu0.2