CVE-2022-23634 – puma

Package

Manager: gem
Name: puma
Vulnerable Version: >=5.0.0 <5.6.2 || >=0 <4.3.11

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00369 pctl0.57993

Details

Puma used with Rails may lead to Information Exposure ### Impact 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. From Rails: > Under certain circumstances response bodies will not be closed, for example a bug in a webserver[1] or a bug in a Rack middleware. In the event a response is not notified of a close, ActionDispatch::Executor will not know to reset thread local state for the next request. This can lead to data being leaked to subsequent requests, especially when interacting with ActiveSupport::CurrentAttributes. The combination of these two behaviors (Puma not closing the body + Rails' Executor implementation) causes information leakage. ### Patches 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. See: https://github.com/advisories/GHSA-wh98-p28r-vrc9 for details about the rails vulnerability Upgrading to a patched Rails _or_ Puma version fixes the vulnerability. ### Workarounds Upgrade to Rails versions 7.02.2, 6.1.4.6, 6.0.4.6, and 5.2.6.2. The [Rails CVE](https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1) includes a middleware that can be used instead. ### References * Rails CVE: [CVE-2022-23633](https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1) ### For more information If you have any questions or comments about this advisory: * Open an issue in [puma](https://github.com/puma/puma) * See our [security policy](https://github.com/puma/puma/security/policy)

Metadata

Created: 2022-02-11T21:33:23Z
Modified: 2022-08-16T19:43:34Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/02/GHSA-rmj8-8hhh-gv5h/GHSA-rmj8-8hhh-gv5h.json
CWE IDs: ["CWE-200", "CWE-404"]
Alternative ID: GHSA-rmj8-8hhh-gv5h
Finding: F038
Auto approve: 1