Vulnerability Monitor

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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.

Published

2022-02-11T22:15:07.817

Last Modified

2024-11-21T06:48:58.950

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.0 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:N/A:N

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: NONE
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-200
  • Type: Primary
    CWE-404
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application puma puma < 4.3.11 Yes
Application puma puma < 5.6.2 Yes
Application rubyonrails rails < 5.2.6.2 Yes
Application rubyonrails rails < 6.0.4.6 Yes
Application rubyonrails rails < 6.1.4.6 Yes
Application rubyonrails rails < 7.0.2.2 Yes
Operating System debian debian_linux 9.0 Yes
Operating System debian debian_linux 10.0 Yes
Operating System debian debian_linux 11.0 Yes
Operating System fedoraproject fedora 35 Yes
Operating System fedoraproject fedora 36 Yes
Operating System fedoraproject fedora 37 Yes
References