CVE-2022-23634
Published: 11 February 2022
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.
Notes
Author | Note |
---|---|
alexmurray |
focal also appears to be affected but the affected code is in lib/puma/server.rb |
Priority
Status
Package | Release | Status |
---|---|---|
puma
Launchpad, Ubuntu, Debian |
focal |
Released
(3.12.4-1ubuntu2+esm1)
Available with Ubuntu Pro |
impish |
Ignored
(end of life)
|
|
jammy |
Released
(5.5.2-2ubuntu2+esm1)
Available with Ubuntu Pro |
|
kinetic |
Ignored
(end of life, was needed)
|
|
lunar |
Not vulnerable
(5.6.5-3ubuntu1)
|
|
mantic |
Not vulnerable
(5.6.5-3ubuntu1)
|
|
noble |
Not vulnerable
(5.6.5-3ubuntu1)
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Needs triage
|
|
xenial |
Ignored
(end of standard support)
|
|
Patches:
upstream: https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bb |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.9 |
Attack vector | Network |
Attack complexity | High |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
References
- https://github.com/puma/puma/security/advisories/GHSA-rmj8-8hhh-gv5h
- https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bb
- https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1
- https://github.com/advisories/GHSA-rmj8-8hhh-gv5h
- https://github.com/advisories/GHSA-wh98-p28r-vrc9
- https://ubuntu.com/security/notices/USN-6682-1
- https://www.cve.org/CVERecord?id=CVE-2022-23634
- NVD
- Launchpad
- Debian