Bug 2403180 (CVE-2025-61919) - CVE-2025-61919 rubygem-rack: Unbounded read in `Rack::Request` form parsing can lead to memory exhaustion
Summary: CVE-2025-61919 rubygem-rack: Unbounded read in `Rack::Request` form parsing c...
Keywords:
Status: NEW
Alias: CVE-2025-61919
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2403521 2403522 2403523 2403524 2403525
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-10 20:01 UTC by OSIDB Bzimport
Modified: 2025-11-18 14:39 UTC (History)
35 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2025:19512 0 None None None 2025-11-03 20:18:19 UTC
Red Hat Product Errata RHSA-2025:19513 0 None None None 2025-11-03 20:11:19 UTC
Red Hat Product Errata RHSA-2025:19647 0 None None None 2025-11-04 11:16:29 UTC
Red Hat Product Errata RHSA-2025:19719 0 None None None 2025-11-04 17:00:53 UTC
Red Hat Product Errata RHSA-2025:19733 0 None None None 2025-11-04 19:47:42 UTC
Red Hat Product Errata RHSA-2025:19734 0 None None None 2025-11-04 19:58:37 UTC
Red Hat Product Errata RHSA-2025:19736 0 None None None 2025-11-04 23:33:26 UTC
Red Hat Product Errata RHSA-2025:19800 0 None None None 2025-11-05 13:08:05 UTC
Red Hat Product Errata RHSA-2025:19832 0 None None None 2025-11-05 23:45:46 UTC
Red Hat Product Errata RHSA-2025:19855 0 None None None 2025-11-06 02:23:50 UTC
Red Hat Product Errata RHSA-2025:19856 0 None None None 2025-11-06 02:25:05 UTC
Red Hat Product Errata RHSA-2025:19948 0 None None None 2025-11-10 01:34:53 UTC
Red Hat Product Errata RHSA-2025:20962 0 None None None 2025-11-11 15:01:10 UTC
Red Hat Product Errata RHSA-2025:21036 0 None None None 2025-11-11 19:48:51 UTC
Red Hat Product Errata RHSA-2025:21696 0 None None None 2025-11-18 14:39:25 UTC

Description OSIDB Bzimport 2025-10-10 20:01:43 UTC 
Rack is a modular Ruby web server interface. Prior to versions 2.2.20, 3.1.18, and 3.2.3, `Rack::Request#POST` reads the entire request body into memory for `Content-Type: application/x-www-form-urlencoded`, calling `rack.input.read(nil)` without enforcing a length or cap. Large request bodies can therefore be buffered completely into process memory before parsing, leading to denial of service (DoS) through memory exhaustion. Users should upgrade to Rack version 2.2.20, 3.1.18, or 3.2.3, anu of which enforces form parameter limits using `query_parser.bytesize_limit`, preventing unbounded reads of `application/x-www-form-urlencoded` bodies. Additionally, enforce strict maximum body size at the proxy or web server layer (e.g., Nginx `client_max_body_size`, Apache `LimitRequestBody`).
Comment 4 errata-xmlrpc 2025-11-03 20:11:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:19513 https://access.redhat.com/errata/RHSA-2025:19513
Comment 5 errata-xmlrpc 2025-11-03 20:18:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:19512 https://access.redhat.com/errata/RHSA-2025:19512
Comment 6 errata-xmlrpc 2025-11-04 11:16:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2025:19647 https://access.redhat.com/errata/RHSA-2025:19647
Comment 7 errata-xmlrpc 2025-11-04 17:00:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:19719 https://access.redhat.com/errata/RHSA-2025:19719
Comment 8 errata-xmlrpc 2025-11-04 19:47:39 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:19733 https://access.redhat.com/errata/RHSA-2025:19733
Comment 9 errata-xmlrpc 2025-11-04 19:58:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2025:19734 https://access.redhat.com/errata/RHSA-2025:19734
Comment 10 errata-xmlrpc 2025-11-04 23:33:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2025:19736 https://access.redhat.com/errata/RHSA-2025:19736
Comment 11 errata-xmlrpc 2025-11-05 13:08:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:19800 https://access.redhat.com/errata/RHSA-2025:19800
Comment 12 errata-xmlrpc 2025-11-05 23:45:42 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.17 for RHEL 9

Via RHSA-2025:19832 https://access.redhat.com/errata/RHSA-2025:19832
Comment 13 errata-xmlrpc 2025-11-06 02:23:46 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.16 for RHEL 8
  Red Hat Satellite 6.16 for RHEL 9

Via RHSA-2025:19855 https://access.redhat.com/errata/RHSA-2025:19855
Comment 14 errata-xmlrpc 2025-11-06 02:25:01 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.15 for RHEL 8

Via RHSA-2025:19856 https://access.redhat.com/errata/RHSA-2025:19856
Comment 15 errata-xmlrpc 2025-11-10 01:34:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2025:19948 https://access.redhat.com/errata/RHSA-2025:19948
Comment 16 errata-xmlrpc 2025-11-11 15:01:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:20962 https://access.redhat.com/errata/RHSA-2025:20962
Comment 17 errata-xmlrpc 2025-11-11 19:48:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:21036 https://access.redhat.com/errata/RHSA-2025:21036
Comment 18 errata-xmlrpc 2025-11-18 14:39:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2025:21696 https://access.redhat.com/errata/RHSA-2025:21696
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