Information Exposure when using Puma with Rails
CVE-2022-23634

8HIGH

Key Information:

Vendor

Puma

Status
Puma
Vendor
CVE Published:
11 February 2022

What is CVE-2022-23634?

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.

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Deploy the Patch

Affected Version(s)

puma >= 5.0.0, < 5.6.2 < 5.0.0, 5.6.2

puma < 4.3.11 < 4.3.11

References

https://github.com/puma/puma/security/advisories/GHSA-rmj...
x_refsource_CONFIRM
https://github.com/puma/puma/commit/b70f451fe8abc0cff192c...
x_refsource_MISC
https://github.com/advisories/GHSA-rmj8-8hhh-gv5h
x_refsource_MISC

CVSS V3.1

Score:
8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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