CVE-2022-23634

Information Exposure when using Puma with Rails

Description

Puma is a Ruby/Rack web server built for parallelism. Prior to `puma` version `5.6.2`, `puma` may not always call `close` on the response body. Rails, prior to version `7.0.2.2`, depended on the response body being closed in order for its `CurrentAttributes` implementation to work correctly. The combination of these two behaviors (Puma not closing the body + Rails' Executor implementation) causes information leakage. This problem is fixed in Puma versions 5.6.2 and 4.3.11. This problem is fixed in Rails versions 7.02.2, 6.1.4.6, 6.0.4.6, and 5.2.6.2. Upgrading to a patched Rails _or_ Puma version fixes the vulnerability.

Categories

8.0
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.31%
Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: puma puma
Published at:
Updated at:

References

Link Tags
https://github.com/puma/puma/security/advisories/GHSA-rmj8-8hhh-gv5h third party advisory patch
https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bb third party advisory patch
https://github.com/advisories/GHSA-rmj8-8hhh-gv5h third party advisory
https://github.com/advisories/GHSA-wh98-p28r-vrc9 not applicable third party advisory mitigation
https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1 mailing list patch mitigation third party advisory
https://www.debian.org/security/2022/dsa-5146 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html third party advisory mailing list
https://security.gentoo.org/glsa/202208-28 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-23634?
CVE-2022-23634 has been scored as a high severity vulnerability.
How to fix CVE-2022-23634?
To fix CVE-2022-23634, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-23634 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-23634 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-23634?
CVE-2022-23634 affects puma puma.
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