5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
59.0%
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.
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.
Upgrade to Rails versions 7.02.2, 6.1.4.6, 6.0.4.6, and 5.2.6.2.
The Rails CVE includes a middleware that can be used instead.
If you have any questions or comments about this advisory:
github.com/advisories/GHSA-rmj8-8hhh-gv5h
github.com/advisories/GHSA-wh98-p28r-vrc9
github.com/puma/puma
github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bb
github.com/puma/puma/security/advisories/GHSA-rmj8-8hhh-gv5h
github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2022-23634.yml
groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1
lists.debian.org/debian-lts-announce/2022/05/msg00034.html
lists.debian.org/debian-lts-announce/2022/08/msg00015.html
lists.fedoraproject.org/archives/list/[email protected]/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5
lists.fedoraproject.org/archives/list/[email protected]/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G
lists.fedoraproject.org/archives/list/[email protected]/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB
nvd.nist.gov/vuln/detail/CVE-2022-23634
security.gentoo.org/glsa/202208-28
www.debian.org/security/2022/dsa-5146
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
59.0%