Uncontrolled resource consumption in https://github.com/rack/rack
Priority MEDIUM 42CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 11 fixed, 4 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.
Summary
A DoS vulnerability exists in Rack <v3.0.4.2, <v2.2.6.3, <v2.1.4.3 and <v2.0.9.3 within in the Multipart MIME parsing code in which could allow an attacker to craft requests that can be abuse to cause multipart parsing to take longer than expected.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0183 78th percentileScored 2026-11-07
Fix Partial rack (RubyGems): 2.0.9.3, 2.1.4.3, 2.2.6.3 +1Red Hat: 6 advisoriesRed Hat: 11 fixed, 4 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | https://github.com/rack/rack | 3.0.4.2, 2.2.6.3, 2.1.4.3, 2.0.9.3 | — | No fix listed | CNA |
| — | rack (RubyGems) | before 2.0.9.3 | 2.0.9.3 | Patch available | GHSA-3h57-hmj3-gj3p |
| — | rack (RubyGems) | 2.1.0 to before 2.1.4.3 | 2.1.4.3 | Patch available | GHSA-3h57-hmj3-gj3p |
| — | rack (RubyGems) | 2.2.0 to before 2.2.6.3 | 2.2.6.3 | Patch available | GHSA-3h57-hmj3-gj3p |
| — | rack (RubyGems) | 3.0.0 to before 3.0.4.2 | 3.0.4.2 | Patch available | GHSA-3h57-hmj3-gj3p |
- https://github.com/rack/rack Vendor— Affected 3.0.4.2, 2.2.6.3, 2.1.4.3, 2.0.9.3 Fixed in — No fix listed CNA
- rack (RubyGems) Vendor— Affected before 2.0.9.3 Fixed in 2.0.9.3 Patch available GHSA-3h57-hmj3-gj3p
- rack (RubyGems) Vendor— Affected 2.1.0 to before 2.1.4.3 Fixed in 2.1.4.3 Patch available GHSA-3h57-hmj3-gj3p
- rack (RubyGems) Vendor— Affected 2.2.0 to before 2.2.6.3 Fixed in 2.2.6.3 Patch available GHSA-3h57-hmj3-gj3p
- rack (RubyGems) Vendor— Affected 3.0.0 to before 3.0.4.2 Fixed in 3.0.4.2 Patch available GHSA-3h57-hmj3-gj3p
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:* | before 2.0.9.3; 2.1.0 to before 2.1.4.3; 2.2.0 to before 2.2.6.3; 3.0.0 to before 3.0.4.2 | Vulnerable | rack |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Debian |
- cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:* Versions before 2.0.9.3; 2.1.0 to before 2.1.4.3; 2.2.0 to before 2.2.6.3; 3.0.0 to before 3.0.4.2 Vulnerable ·rack
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
Remediation
- Fix · GHSA-3h57-hmj3-gj3p rack (RubyGems) Fixed in 2.0.9.3 Advisory →
- Fix · GHSA-3h57-hmj3-gj3p rack (RubyGems) Fixed in 2.1.4.3 Advisory →
- Fix · GHSA-3h57-hmj3-gj3p rack (RubyGems) Fixed in 2.2.6.3 Advisory →
- Fix · GHSA-3h57-hmj3-gj3p rack (RubyGems) Fixed in 3.0.4.2 Advisory →
Red Hat 6 advisories
- RHSA-2023:6818 Released 2023-11-08 · Red Hat rating ImportantSatellite 6.14 security and bug fix update
- Red Hat Satellite 6.14 for RHEL 8 foreman-3.7.0.9-1.el8sat, foreman-cli-3.7.0.9-1.el8sat, foreman-debug-3.7.0.9-1.el8sat +33
- RHSA-2023:3403 Released 2023-05-31 · Red Hat rating Moderatepcs security and bug fix update
- Red Hat Enterprise Linux High Availability EUS (v.8.6) pcs-0.10.12-6.el8_6.4, pcs-snmp-0.10.12-6.el8_6.4
- Red Hat Enterprise Linux Resilient Storage EUS (v.8.6) pcs-0.10.12-6.el8_6.4, pcs-snmp-0.10.12-6.el8_6.4
- RHSA-2023:3082 Released 2023-05-16 · Red Hat rating Moderatepcs security and bug fix update
- Red Hat Enterprise Linux HighAvailability (v. 8) pcs-0.10.15-4.el8_8.1, pcs-snmp-0.10.15-4.el8_8.1
- Red Hat Enterprise Linux ResilientStorage (v. 8) pcs-0.10.15-4.el8_8.1, pcs-snmp-0.10.15-4.el8_8.1
Show 3 more Red Hat advisories
- RHSA-2023:2652 Released 2023-05-09 · Red Hat rating Importantpcs security and bug fix update
- Red Hat Enterprise Linux HighAvailability (v. 9) pcs-0.11.4-7.el9_2, pcs-snmp-0.11.4-7.el9_2
- Red Hat Enterprise Linux ResilientStorage (v. 9) pcs-0.11.4-7.el9_2, pcs-snmp-0.11.4-7.el9_2
- RHSA-2023:1981 Released 2023-04-25 · Red Hat rating Moderatepcs security and bug fix update
- Red Hat Enterprise Linux High Availability EUS (v.9.0) pcs-0.11.1-10.el9_0.4, pcs-snmp-0.11.1-10.el9_0.4
- Red Hat Enterprise Linux Resilient Storage EUS (v.9.0) pcs-0.11.1-10.el9_0.4, pcs-snmp-0.11.1-10.el9_0.4
- RHSA-2023:1961 Released 2023-04-25 · Red Hat rating Moderatepcs security and bug fix update
- Red Hat Enterprise Linux HighAvailability EUS (v.8.4) pcs-0.10.8-1.el8_4.4, pcs-snmp-0.10.8-1.el8_4.4
- Red Hat Enterprise Linux ResilientStorage EUS (v.8.4) pcs-0.10.8-1.el8_4.4, pcs-snmp-0.10.8-1.el8_4.4
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Logging Subsystem for Red Hat OpenShift | Affected | No fix yet |
| Red Hat 3scale API Management Platform 2 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Storage 3 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux High Availability EUS (v.8.6) | Fixed | RHSA-2023:3403 |
| Red Hat Enterprise Linux High Availability EUS (v.9.0) | Fixed | RHSA-2023:1981 |
| Red Hat Enterprise Linux HighAvailability (v. 8) | Fixed | RHSA-2023:3082 |
| Red Hat Enterprise Linux HighAvailability (v. 9) | Fixed | RHSA-2023:2652 |
| Red Hat Enterprise Linux HighAvailability EUS (v.8.4) | Fixed | RHSA-2023:1961 |
| Red Hat Enterprise Linux Resilient Storage EUS (v.8.6) | Fixed | RHSA-2023:3403 |
| Red Hat Enterprise Linux Resilient Storage EUS (v.9.0) | Fixed | RHSA-2023:1981 |
| Red Hat Enterprise Linux ResilientStorage (v. 8) | Fixed | RHSA-2023:3082 |
| Red Hat Enterprise Linux ResilientStorage (v. 9) | Fixed | RHSA-2023:2652 |
| Red Hat Enterprise Linux ResilientStorage EUS (v.8.4) | Fixed | RHSA-2023:1961 |
| Red Hat Satellite 6.14 for RHEL 8 | Fixed | RHSA-2023:6818 |
Not affected: 1 product
- Red Hat Satellite 6.14 for RHEL 8
Timeline
- 2026-10-02 Threatist record created from CVE-2023-27530
- 2026-10-03 Alias added: GHSA-3h57-hmj3-gj3p
References
Advisory 3
Sources
- CVE-2023-27530 · CVE Program
- CVE-2023-27530 · NVD
- FIRST EPSS
- GHSA-3h57-hmj3-gj3p · GitHub Advisory Database · CC BY 4.0
- CVE-2023-27530 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences