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Ubuntu Security Notice USN-6399-1
September 27, 2023
puma vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.04
Summary:
Puma could allow HTTP Request Smuggling attacks.
Software Description:
- puma: threaded HTTP 1.1 server for Ruby/Rack applications
Details:
It was discovered that Puma incorrectly handled parsing certain headers. A
remote attacker could possibly use this issue to perform an HTTP request
Smuggling attack.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.04:
   puma                            5.6.5-3ubuntu1.1
In general, a standard system update will make all the necessary changes.
References:
   https://ubuntu.com/security/notices/USN-6399-1
   CVE-2023-40175
Package Information:
   https://launchpad.net/ubuntu/+source/puma/5.6.5-3ubuntu1.1