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Tracking
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| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-4357-1 | ruby-rack security update |
Debian DSA |
DSA-6048-1 | ruby-rack security update |
Github GHSA |
GHSA-w9pc-fmgc-vxvw | Rack: Multipart parser buffers large non‑file fields entirely in memory, enabling DoS (memory exhaustion) |
Tue, 14 Oct 2025 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
| |
| Metrics |
threat_severity
|
threat_severity
|
Fri, 10 Oct 2025 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:* |
Wed, 08 Oct 2025 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Rack
Rack rack |
|
| Vendors & Products |
Rack
Rack rack |
Tue, 07 Oct 2025 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 07 Oct 2025 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, ``Rack::Multipart::Parser` stores non-file form fields (parts without a `filename`) entirely in memory as Ruby `String` objects. A single large text field in a multipart/form-data request (hundreds of megabytes or more) can consume equivalent process memory, potentially leading to out-of-memory (OOM) conditions and denial of service (DoS). Attackers can send large non-file fields to trigger excessive memory usage. Impact scales with request size and concurrency, potentially leading to worker crashes or severe garbage-collection overhead. All Rack applications processing multipart form submissions are affected. Versions 2.2.19, 3.1.17, and 3.2.2 enforce a reasonable size cap for non-file fields (e.g., 2 MiB). Workarounds include restricting maximum request body size at the web-server or proxy layer (e.g., Nginx `client_max_body_size`) and validating and rejecting unusually large form fields at the application level. | |
| Title | Rack's multipart parser buffers large non‑file fields entirely in memory, enabling DoS (memory exhaustion) | |
| Weaknesses | CWE-400 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-10-07T17:52:09.399Z
Reserved: 2025-09-30T19:43:49.900Z
Link: CVE-2025-61771
Updated: 2025-10-07T17:52:01.550Z
Status : Analyzed
Published: 2025-10-07T15:16:03.123
Modified: 2025-10-10T16:45:09.960
Link: CVE-2025-61771
OpenCVE Enrichment
Updated: 2025-10-08T13:36:33Z
Debian DLA
Debian DSA
Github GHSA