EUVD-2025-16936
GHSA-47m2-26rw-j2jw
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Lifecycle Timeline
4DescriptionGitHub Advisory
Rack is a modular Ruby web server interface. Starting in version 3.1.0 and prior to version 3.1.16, there is a denial of service vulnerability in the Content-Disposition parsing component of Rack. This is very similar to the previous security issue CVE-2022-44571. Carefully crafted input can cause Content-Disposition header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is used typically used in multipart parsing. Any applications that parse multipart posts using Rack (virtually all Rails applications) are impacted. Version 3.1.16 contains a patch for the vulnerability.
Analysis
Rack is a modular Ruby web server interface. Starting in version 3.1.0 and prior to version 3.1.16, there is a denial of service vulnerability in the Content-Disposition parsing component of Rack. This is very similar to the previous security issue CVE-2022-44571. Carefully crafted input can cause Content-Disposition header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is used typically used in multipart parsing. Any applications that parse multipart posts using Rack (virtually all Rails applications) are impacted. Version 3.1.16 contains a patch for the vulnerability.
Technical ContextAI
A denial of service vulnerability allows an attacker to disrupt the normal functioning of a system, making it unavailable to legitimate users. This vulnerability is classified as Allocation of Resources Without Limits or Throttling (CWE-770).
RemediationAI
A vendor patch is available — apply it immediately. Implement rate limiting and input validation. Use timeout mechanisms for resource-intensive operations. Deploy DDoS protection where applicable.
Directory traversal in Rack versions prior to 2.2.22, 3.1.20, and 3.2.5 allows unauthenticated remote attackers to list
Rack is a modular Ruby web server interface. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable,
Rack is a modular Ruby web server interface. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable,
A reliance on cookies without validation/integrity check security vulnerability exists in rack < 2.2.3, rack < 2.1.4 tha
A sequence injection vulnerability exists in Rack <2.0.9.1, <2.1.4.1 and <2.2.3.1 which could allow is a possible shell
Rack provides an interface for developing web applications in Ruby. Rated medium severity (CVSS 5.7), this vulnerability
Rack's Directory module fails to sanitize filenames when generating HTML directory listings, allowing attackers to craft
A directory traversal vulnerability exists in rack < 2.2.0 that allows an attacker perform directory traversal vulnerabi
Rack::Session::Cookie in Rack 1.5.x before 1.5.2, 1.4.x before 1.4.5, 1.3.x before 1.3.10, 1.2.x before 1.2.8, and 1.1.x
Rack is a modular Ruby web server interface. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable,
lib/rack/utils.rb in Rack before 1.5.4 and 1.6.x before 1.6.2, as used with Ruby on Rails 3.x and 4.x and other products
Rack is a modular Ruby web server interface. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable,
Same technique Denial Of Service
View allVendor StatusVendor
Ubuntu
Priority: Medium| Release | Status | Version |
|---|---|---|
| oracular | ignored | end of life, was needs-triage |
| bionic | not-affected | - |
| focal | not-affected | - |
| jammy | not-affected | - |
| noble | not-affected | - |
| plucky | not-affected | - |
| trusty | not-affected | - |
| upstream | released | 3.1.16 |
| xenial | not-affected | - |
Debian
Bug #1107363| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | not-affected | - | - |
| bullseye (security) | fixed | 2.1.4-3+deb11u4 | - |
| bookworm, bookworm (security) | fixed | 2.2.20-0+deb12u1 | - |
| trixie (security), trixie | fixed | 3.1.18-1~deb13u1 | - |
| forky | fixed | 3.1.18-1 | - |
| sid | fixed | 3.2.5-1 | - |
| bookworm | not-affected | - | - |
| (unstable) | fixed | 3.1.16-0.1 | - |
SUSE
Severity: Medium| Product | Status |
|---|---|
| SUSE Linux Enterprise High Availability Extension 15 SP7 | Fixed |
| SUSE Linux Enterprise High Availability Extension 16.0 | Fixed |
| SUSE Linux Enterprise High Availability Extension 16.1 | Fixed |
| SUSE Linux Enterprise Server for SAP applications 16.0 | Fixed |
| SUSE Linux Enterprise Server for SAP applications 16.1 | Fixed |
| openSUSE Leap 15.6 | Fixed |
| SUSE Linux Enterprise High Availability Extension 15 SP4 | Fixed |
| SUSE Linux Enterprise High Availability Extension 15 SP5 | Fixed |
| SUSE Linux Enterprise High Availability Extension 15 | Fixed |
| SUSE Linux Enterprise High Availability Extension 15 SP1 | Fixed |
| SUSE Linux Enterprise High Availability Extension 15 SP2 | Fixed |
| SUSE Linux Enterprise High Availability Extension 15 SP3 | Fixed |
| SUSE Linux Enterprise High Availability Extension 15 SP6 | Fixed |
| openSUSE Leap 15.3 | Fixed |
| openSUSE Leap 15.4 | Fixed |
| openSUSE Leap 15.5 | Fixed |
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External POC / Exploit Code
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