CVE-2022-23634: Puma Puma Used With Rails May Vulnerability
HIGHCVE-2022-23634 is a HIGH (CVSS 8.0) puma used with rails may vulnerability (CWE-404: Improper Resource Shutdown or Release) affecting Puma libraries in the RubyGems ecosystem. The issue involves puma used with rails may lead to information exposure. Remediation is available by upgrading affected packages to version 5.6.2, 4.3.11.
CVE-2022-23634 at a Glance
Security Impact
CVSS: 8.0
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N).
How to Fix CVE-2022-23634
To remediate this vulnerability, upgrade all affected Puma dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade puma to 5.6.2
Upgrade puma to 4.3.11
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for puma
How to Check if You Are Affected
To determine whether your application is affected by CVE-2022-23634, inspect your project dependencies for Puma:
inspect dependencies for puma
Analyze the terminal output to locate any version of Puma in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.6.2), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-404: Improper Resource Shutdown or Release, where the product does not release or incorrectly releases a resource before it is made available for re-use. In Puma, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2022-23634 Affected Puma Versions
2 component(s)References
Frequently Asked Questions
What is CVE-2022-23634?
Which Puma versions are affected?
What version fixes CVE-2022-23634?
Is puma affected?
What is the CVSS score of CVE-2022-23634?
What CWE is associated with CVE-2022-23634?
How can I check RubyGems dependencies for CVE-2022-23634?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-rmj8-8hhh-gv5h",
"modified" : "2022-08-16T19:43:34Z",
"published" : "2022-02-11T21:33:23Z",
"aliases" : [ "CVE-2022-23634" ],
"summary" : "Puma used with Rails may lead to Information Exposure",
"details" : "### Impact\nPrior 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.\n\nFrom Rails:\n\n> 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.\n\nThe combination of these two behaviors (Puma not closing the body + Rails' Executor implementation) causes information leakage.\n\n### Patches\nThis problem is fixed in Puma versions 5.6.2 and 4.3.11.\n\nThis problem is fixed in Rails versions 7.02.2, 6.1.4.6, 6.0.4.6, and 5.2.6.2.\n\nSee: \nhttps://github.com/advisories/GHSA-wh98-p28r-vrc9 \nfor details about the rails vulnerability\n\nUpgrading to a patched Rails _or_ Puma version fixes the vulnerability.\n\n### Workarounds\n\nUpgrade to Rails versions 7.02.2, 6.1.4.6, 6.0.4.6, and 5.2.6.2.\n\nThe [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.\n\n### References\n\n* 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)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [puma](https://github.com/puma/puma)\n* See our [security policy](https://github.com/puma/puma/security/policy)",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "RubyGems",
"name" : "puma"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "5.0.0"
}, {
"fixed" : "5.6.2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "RubyGems",
"name" : "puma"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "4.3.11"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/puma/puma/security/advisories/GHSA-rmj8-8hhh-gv5h"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-23634"
}, {
"type" : "WEB",
"url" : "https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bb"
}, {
"type" : "ADVISORY",
"url" : "https://github.com/advisories/GHSA-rmj8-8hhh-gv5h"
}, {
"type" : "ADVISORY",
"url" : "https://github.com/advisories/GHSA-wh98-p28r-vrc9"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/puma/puma"
}, {
"type" : "WEB",
"url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2022-23634.yml"
}, {
"type" : "WEB",
"url" : "https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1"
}, {
"type" : "WEB",
"url" : "https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html"
}, {
"type" : "WEB",
"url" : "https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html"
}, {
"type" : "WEB",
"url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5"
}, {
"type" : "WEB",
"url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G"
}, {
"type" : "WEB",
"url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB"
}, {
"type" : "WEB",
"url" : "https://security.gentoo.org/glsa/202208-28"
}, {
"type" : "WEB",
"url" : "https://www.debian.org/security/2022/dsa-5146"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-200", "CWE-404" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2022-02-11T21:33:23Z",
"nvd_published_at" : "2022-02-11T22:15:00Z"
}
}