CVE-2022-23634

Advisory lineage Upstream: 0 Downstream: 13
Modified
Published: 11 Feb 2022, 21:40
Last modified:23 Apr 2025, 19:05

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
8 HIGH
v3.1 (cve.org)
EPSS Score
0.48% LOW
0% probability +0.04%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

11 Feb 2022, 21:40
Published
Vulnerability first disclosed
23 Apr 2025, 19:05
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 8CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
  • v3.1•MEDIUM•Score: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.48%• Percentile: 65%

Techniques & Countermeasures

  • CWE-200•Exposure of Sensitive Information to an Unauthorized Actor

    The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

  • CWE-404•Improper Resource Shutdown or Release

    The product does not release or incorrectly releases a resource before it is made available for re-use.

Affected Systems

  • debian•debian_linux

    9.0 | 10.0 | 11.0

  • fedoraproject•fedora

    35 | 36 | 37

  • puma•puma

    < 4.3.11 | ≥ 5.0.0, < 5.6.2

  • rubyonrails•rails

    ≥ 5.0.0, < 5.2.6.2 | ≥ 6.0.0, < 6.0.4.6 | ≥ 6.1.0, < 6.1.4.6 | ≥ 7.0.0, < 7.0.2.2

References (12)