High severityNVD Advisory· Published Feb 11, 2022· Updated Apr 23, 2025
Information Exposure when using Puma with Rails
CVE-2022-23634
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pumaRubyGems | >= 5.0.0, < 5.6.2 | 5.6.2 |
pumaRubyGems | < 4.3.11 | 4.3.11 |
Affected products
10- ghsa-coords9 versionspkg:gem/pumapkg:rpm/opensuse/ruby3.2-rubygem-puma&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/rubygem-puma&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/rubygem-puma&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/rubygem-puma&distro=openSUSE%20Tumbleweedpkg:rpm/suse/rubygem-puma&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015pkg:rpm/suse/rubygem-puma&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP1pkg:rpm/suse/rubygem-puma&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP2pkg:rpm/suse/rubygem-puma&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP3
>= 5.0.0, < 5.6.2+ 8 more
- (no CPE)range: >= 5.0.0, < 5.6.2
- (no CPE)range: < 6.0.0-2.1
- (no CPE)range: < 4.3.11-150000.3.6.2
- (no CPE)range: < 4.3.11-150000.3.6.2
- (no CPE)range: < 5.6.2-1.1
- (no CPE)range: < 4.3.11-150000.3.6.2
- (no CPE)range: < 4.3.11-150000.3.6.2
- (no CPE)range: < 4.3.11-150000.3.6.2
- (no CPE)range: < 4.3.11-150000.3.6.2
- puma/pumav5Range: >= 5.0.0, < 5.6.2
Patches
Vulnerability mechanics
References
17- github.com/advisories/GHSA-rmj8-8hhh-gv5hghsax_refsource_MISCADVISORY
- github.com/advisories/GHSA-wh98-p28r-vrc9ghsax_refsource_MISCADVISORY
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB/mitrevendor-advisoryx_refsource_FEDORA
- nvd.nist.gov/vuln/detail/CVE-2022-23634ghsaADVISORY
- security.gentoo.org/glsa/202208-28ghsavendor-advisoryx_refsource_GENTOOWEB
- www.debian.org/security/2022/dsa-5146ghsavendor-advisoryx_refsource_DEBIANWEB
- github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bbghsax_refsource_MISCWEB
- github.com/puma/puma/security/advisories/GHSA-rmj8-8hhh-gv5hghsax_refsource_CONFIRMWEB
- github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2022-23634.ymlghsaWEB
- groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJghsax_refsource_MISCWEB
- lists.debian.org/debian-lts-announce/2022/05/msg00034.htmlghsamailing-listx_refsource_MLISTWEB
- lists.debian.org/debian-lts-announce/2022/08/msg00015.htmlghsamailing-listx_refsource_MLISTWEB
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5ghsaWEB
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43GghsaWEB
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIBghsaWEB
News mentions
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