Upstream information
Description
Rack is a modular Ruby web server interface. Prior to versions 2.2.14, 3.0.16, and 3.1.14, `Rack::QueryParser` parses query strings and `application/x-www-form-urlencoded` bodies into Ruby data structures without imposing any limit on the number of parameters, allowing attackers to send requests with extremely large numbers of parameters. The vulnerability arises because `Rack::QueryParser` iterates over each `&`-separated key-value pair and adds it to a Hash without enforcing an upper bound on the total number of parameters. This allows an attacker to send a single request containing hundreds of thousands (or more) of parameters, which consumes excessive memory and CPU during parsing. An attacker can trigger denial of service by sending specifically crafted HTTP requests, which can cause memory exhaustion or pin CPU resources, stalling or crashing the Rack server. This results in full service disruption until the affected worker is restarted. Versions 2.2.14, 3.0.16, and 3.1.14 fix the issue. Some other mitigations are available. One may use middleware to enforce a maximum query string size or parameter count, or employ a reverse proxy (such as Nginx) to limit request sizes and reject oversized query strings or bodies. Limiting request body sizes and query string lengths at the web server or CDN level is an effective mitigation.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CNA (GitHub) | SUSE | |
|---|---|---|
| Base Score | 7.5 | 7.5 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | None | None |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3.1 |
| SUSE | |
|---|---|
| Base Score | 8.7 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Attack Requirements | None |
| Privileges Required | None |
| User Interaction | None |
| Vulnerable System Confidentiality Impact | None |
| Vulnerable System Integrity Impact | None |
| Vulnerable System Availability Impact | High |
| Subsequent System Confidentiality Impact | None |
| Subsequent System Integrity Impact | None |
| Subsequent System Availability Impact | None |
| CVSSv4 Version | 4.0 |
SUSE Security Advisories:
- SUSE-SU-2025:01586-1, published 2025-05-19T17:23:48Z
- openSUSE-SU-2025:15067-1, published Fri May 9 18:50:18 2025
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| SUSE Linux Enterprise High Availability Extension 15 SP3 |
| Patchnames: SUSE-SLE-Product-HA-15-SP3-2025-1586 |
| SUSE Linux Enterprise High Availability Extension 15 SP4 |
| Patchnames: SUSE-SLE-Product-HA-15-SP4-2025-1586 |
| SUSE Linux Enterprise High Availability Extension 15 SP5 |
| Patchnames: SUSE-SLE-Product-HA-15-SP5-2025-1586 |
| SUSE Linux Enterprise High Availability Extension 15 SP6 |
| Patchnames: SUSE-SLE-Product-HA-15-SP6-2025-1586 |
| openSUSE Leap 15.6 |
| Patchnames: openSUSE-SLE-15.6-2025-1586 |
| openSUSE Tumbleweed |
| Patchnames: openSUSE-Tumbleweed-2025-15067 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise High Availability Extension 15 SP6 | hawk2 | Not affected |
| SUSE Linux Enterprise High Availability Extension 15 SP6 | rubygem-rack | Released |
| SUSE Linux Enterprise High Availability Extension 15 SP7 | hawk2 | Not affected |
| SUSE Linux Enterprise High Availability Extension 15 SP7 | rubygem-rack | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP6 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP7 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP6 | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP7 | rmt-server | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | rmt-server | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | rmt-server | Affected |
| SUSE Manager Proxy 4.3 | rmt-server | Affected |
| SUSE Manager Retail Branch Server 4.3 | rmt-server | Affected |
| SUSE Manager Server 4.3 | rmt-server | Affected |
| openSUSE Leap 15.6 | hawk2 | Not affected |
| openSUSE Leap 15.6 | rmt-server | Affected |
| openSUSE Leap 15.6 | rubygem-rack | Released |
| openSUSE Leap 15.6 | rubygem-rack-1_6 | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Availability Extension 12 SP5 | hawk2 | Not affected |
| SUSE Linux Enterprise High Availability Extension 15 SP3 | hawk2 | Not affected |
| SUSE Linux Enterprise High Availability Extension 15 SP3 | rubygem-rack | Released |
| SUSE Linux Enterprise High Availability Extension 15 SP4 | hawk2 | Not affected |
| SUSE Linux Enterprise High Availability Extension 15 SP4 | rubygem-rack | Released |
| SUSE Linux Enterprise High Availability Extension 15 SP5 | hawk2 | Not affected |
| SUSE Linux Enterprise High Availability Extension 15 SP5 | rubygem-rack | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP5 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP3 | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP4 | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP5 | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | hawk2 | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | rmt-server | Affected |
| SUSE Enterprise Storage 6 | rmt-server | Affected |
| SUSE Enterprise Storage 7 | rmt-server | Affected |
| SUSE Enterprise Storage 7.1 | rmt-server | Affected |
| SUSE Linux Enterprise High Availability Extension 12 SP4 | hawk2 | Not affected |
| SUSE Linux Enterprise High Availability Extension 15 | hawk2 | Not affected |
| SUSE Linux Enterprise High Availability Extension 15 | rubygem-rack | Affected |
| SUSE Linux Enterprise High Availability Extension 15 SP1 | hawk2 | Not affected |
| SUSE Linux Enterprise High Availability Extension 15 SP1 | rubygem-rack | Affected |
| SUSE Linux Enterprise High Availability Extension 15 SP2 | hawk2 | Not affected |
| SUSE Linux Enterprise High Availability Extension 15 SP2 | rubygem-rack | Affected |
| SUSE Linux Enterprise High Performance Computing 15 | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | rmt-server | Affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP1 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP2 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP3 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 | rmt-server | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | rmt-server | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | rmt-server | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | rmt-server | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP1 | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP2 | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | rmt-server | Affected |
| SUSE Linux Enterprise Server 15-LTSS | rmt-server | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | rmt-server | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | rmt-server | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | rmt-server | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | rmt-server | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | rmt-server | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | rmt-server | Affected |
| SUSE Manager Proxy 4.0 | rmt-server | Affected |
| SUSE Manager Proxy 4.1 | rmt-server | Affected |
| SUSE Manager Proxy 4.2 | rmt-server | Affected |
| SUSE Manager Retail Branch Server 4.0 | rmt-server | Affected |
| SUSE Manager Retail Branch Server 4.1 | rmt-server | Affected |
| SUSE Manager Retail Branch Server 4.2 | rmt-server | Affected |
| SUSE Manager Server 4.0 | rmt-server | Affected |
| SUSE Manager Server 4.1 | rmt-server | Affected |
| SUSE Manager Server 4.2 | rmt-server | Affected |
| openSUSE Leap 15.3 | hawk2 | Not affected |
| openSUSE Leap 15.3 | rmt-server | Affected |
| openSUSE Leap 15.3 | rubygem-rack | Affected |
| openSUSE Leap 15.3 | rubygem-rack-1_6 | Affected |
| openSUSE Leap 15.4 | hawk2 | Not affected |
| openSUSE Leap 15.4 | rmt-server | Affected |
| openSUSE Leap 15.4 | rubygem-rack | Affected |
| openSUSE Leap 15.4 | rubygem-rack-1_6 | Affected |
| openSUSE Leap 15.5 | hawk2 | Not affected |
| openSUSE Leap 15.5 | rmt-server | Affected |
| openSUSE Leap 15.5 | rubygem-rack | Affected |
| openSUSE Leap 15.5 | rubygem-rack-1_6 | Affected |
| Container Status | ||
| suse/rmt-server | rmt-server | Affected |
SUSE Timeline for this CVE
CVE page created: Thu May 8 02:00:38 2025CVE page last modified: Wed May 21 01:10:16 2025