Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | https://github.com/rack/rack | 3.0.4.2, 2.2.6.3, 2.1.4.3, 2.0.9.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | ruby-rack | 2.2.6.4-1 | — |
| Debian 13 | ruby-rack | 2.2.6.4-1 | — |
| Debian 12 | ruby-rack | 2.2.6.4-1 | — |
| Debian 11 | ruby-rack | 2.1.4-3+deb11u1 | DSA-5530-1 |
| Debian 10 | ruby-rack | 2.0.6-3+deb10u3 | DLA-3392-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | ruby-rack | 2.2.7-1ubuntu0.1 | USN-6837-1 |
| Ubuntu 22.04 LTS | ruby-rack | 2.1.4-5ubuntu1.1 | USN-7036-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | ruby-rack | 2.1.4-5ubuntu1+esm4 | USN-6905-1 |
| Ubuntu Pro 20.04 LTS | ruby-rack | 2.0.7-2ubuntu0.1+esm4 | USN-6905-1 |
| Ubuntu Pro 18.04 LTS | ruby-rack | 1.6.4-4ubuntu0.2+esm5 | USN-6905-1 |
| Ubuntu Pro 16.04 LTS | ruby-rack | 1.6.4-3ubuntu0.2+esm5 | USN-6905-1 |
| Ubuntu Pro 14.04 LTS | ruby-rack | 1.5.2-3+deb8u3ubuntu1~esm7 | USN-6905-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | pcs +1 | 0.11.4-7.el9_2 | RHSA-2023:2652 |
| RHEL 8 | pcs +1 | 0.10.15-4.el8_8.1 | RHSA-2023:3082 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Satellite Utils 6 | foreman +1 | 3.7.0.9-1.el8sat | RHSA-2023:6818 |
| Red Hat Satellite Capsule 6 | foreman +1 | 3.7.0.9-1.el8sat | RHSA-2023:6818 |
| Red Hat Satellite Capsule 6 | puppet-agent | 7.26.0-3.el8sat | RHSA-2023:6818 |
| Red Hat Satellite Capsule 6 | puppetserver | 7.11.0-1.el8sat | RHSA-2023:6818 |
| Red Hat Satellite Capsule 6 | python-django +1 | 3.2.21-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite Capsule 6 | python-future +1 | 0.18.3-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite Capsule 6 | python-gitpython +1 | 3.1.32-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite Capsule 6 | python-pulp-ansible +1 | 1:0.16.0-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite Capsule 6 | python-requests +1 | 2.31.0-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite Capsule 6 | python-sqlparse +1 | 0.4.4-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite Capsule 6 | rubygem-rack | 2.2.7-1.el8sat | RHSA-2023:6818 |
| Red Hat Satellite 6 | foreman +13 | 3.7.0.9-1.el8sat | RHSA-2023:6818 |
| Red Hat Satellite 6 | puppet-agent | 7.26.0-3.el8sat | RHSA-2023:6818 |
| Red Hat Satellite 6 | puppetserver | 7.11.0-1.el8sat | RHSA-2023:6818 |
| Red Hat Satellite 6 | python-django +1 | 3.2.21-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite 6 | python-future +1 | 0.18.3-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite 6 | python-gitpython +1 | 3.1.32-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite 6 | python-pulp-ansible +1 | 1:0.16.0-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite 6 | python-requests +1 | 2.31.0-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite 6 | python-sqlparse +1 | 0.4.4-1.el8pc | RHSA-2023:6818 |
| Red Hat Satellite 6 | rubygem-actionpack +2 | 6.1.7.3-1.el8sat | RHSA-2023:6818 |
| Red Hat Satellite 6 | rubygem-git | 1.18.0-1.el8sat | RHSA-2023:6818 |
| Red Hat Satellite 6 | rubygem-globalid | 1.1.0-1.el8sat | RHSA-2023:6818 |
| Red Hat Satellite 6 | rubygem-kubeclient | 4.10.1-1.el8sat | RHSA-2023:6818 |
| Red Hat Satellite 6 | rubygem-rack | 2.2.7-1.el8sat | RHSA-2023:6818 |
| Red Hat Satellite 6 | yggdrasil-worker-forwarder | 0.0.3-1.el8sat | RHSA-2023:6818 |
| RHEL 9.0 EUS | pcs +1 | 0.11.1-10.el9_0.4 | RHSA-2023:1981 |
| RHEL 8.6 EUS | pcs +1 | 0.10.12-6.el8_6.4 | RHSA-2023:3403 |
| RHEL 8.4 EUS | pcs +1 | 0.10.8-1.el8_4.4 | RHSA-2023:1961 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | pcs +1 | 0.11.4-7.el9_2 | ALSA-2023:2652 |
| AlmaLinux 8 | pcs +1 | 0.10.15-4.el8_8.1.alma | ALSA-2023:3082 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | pcs | 0.11.4-7.el9_2 | RLSA-2023:2652 |
| Rocky Linux 8 | pcs | 0.10.15-4.el8_8.1 | RLSA-2023:3082 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | rmt-server | 2.13-150500.3.3.1 | SUSE-SU-2023:2781-1 |
| SLES 15 SP4 | rmt-server | 2.13-150400.3.12.1 | SUSE-SU-2023:2295-1 |
| SLES 15 SP4 | rubygem-rack | 2.0.8-150000.3.15.1 | SUSE-SU-2023:0725-1 |
| SLES 15 SP3 | rmt-server | 2.13-150300.3.24.1 | SUSE-SU-2023:2280-1 |
| SLES 15 SP3 | rubygem-rack | 2.0.8-150000.3.15.1 | SUSE-SU-2023:0725-1 |
| SLES 15 SP2 | rmt-server | 2.13-150200.3.32.1 | SUSE-SU-2023:2294-1 |
| SLES 15 SP2 | rubygem-rack | 2.0.8-150000.3.15.1 | SUSE-SU-2023:0725-1 |
| SLES 15 SP1 | rmt-server | 2.13-150100.3.45.1 | SUSE-SU-2023:2304-1 |
| SLES 15 SP1 | rubygem-rack | 2.0.8-150000.3.15.1 | SUSE-SU-2023:0725-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | rmt-server | 2.13-150300.3.24.1 | SUSE-SU-2023:2280-1 |
| SLES for SAP 15 SP2 | rmt-server | 2.13-150200.3.32.1 | SUSE-SU-2023:2294-1 |
| SLES for SAP 15 SP1 | rmt-server | 2.13-150100.3.45.1 | SUSE-SU-2023:2304-1 |
| SLE Real Time 15 SP3 | rmt-server | 2.13-150300.3.24.1 | SUSE-SU-2023:2280-1 |
| SLE HPC 15 SP3 | rmt-server | 2.13-150300.3.24.1 | SUSE-SU-2023:2280-1 |
| SLE HPC 15 SP2 | rmt-server | 2.13-150200.3.32.1 | SUSE-SU-2023:2294-1 |
| SLE HPC 15 SP1 | rmt-server | 2.13-150100.3.45.1 | SUSE-SU-2023:2304-1 |
| SUSE Manager Server 4.2 | rmt-server | 2.13-150300.3.24.1 | SUSE-SU-2023:2280-1 |
| SUSE Manager Proxy 4.2 | rmt-server | 2.13-150300.3.24.1 | SUSE-SU-2023:2280-1 |
| SUSE Enterprise Storage 7.1 | rmt-server | 2.13-150300.3.24.1 | SUSE-SU-2023:2280-1 |
| SUSE Enterprise Storage 7 | rmt-server | 2.13-150200.3.32.1 | SUSE-SU-2023:2294-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | rmt-server | 2.12-1.1 | openSUSE-SU-2024:12886-1 |
| openSUSE Tumbleweed | rubygem-rack | 2.2.6.3-1.1 | openSUSE-SU-2026:10358-1, openSUSE-SU-2025:14875-1, openSUSE-SU-2024:13726-1 |
| openSUSE Tumbleweed | rubygem-rack-2.2 | 2.2.8.1-1.1 | openSUSE-SU-2026:10286-1, openSUSE-SU-2025:14811-1, openSUSE-SU-2024:13727-1 |
| openSUSE Leap 15.5 | rmt-server | 2.13-150500.3.3.1 | SUSE-SU-2023:2781-1 |
| openSUSE Leap 15.4 | rmt-server | 2.13-150400.3.12.1 | SUSE-SU-2023:2295-1 |
| openSUSE Leap 15.4 | rubygem-rack | 2.0.8-150000.3.15.1 | SUSE-SU-2023:0725-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | pcs +1 | 0.11.4-7.el9_2 | ELSA-2023-12595 |
| Oracle Linux 8 | pcs +1 | 0.10.15-4.0.1.el8_8.1 | ELSA-2023-3082 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| RubyGems | rack | < 2.0.9.3 | 2.0.9.3 | GHSA-3h57-hmj3-gj3p |
| RubyGems | rack | >= 2.1.0, < 2.1.4.3 | 2.1.4.3 | GHSA-3h57-hmj3-gj3p |
| RubyGems | rack | >= 2.2.0, < 2.2.6.3 | 2.2.6.3 | GHSA-3h57-hmj3-gj3p |
| RubyGems | rack | >= 3.0.0, < 3.0.4.2 | 3.0.4.2 | GHSA-3h57-hmj3-gj3p |
Advisories 34
- ALSA-2023:2652 Important: pcs security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:3082 Moderate: pcs security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:6818 Red Hat Security Advisory: Satellite 6.14 security and bug fix update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- USN-6905-1 ruby-rack vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2023:3403 Red Hat Security Advisory: pcs security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2023:3082 Red Hat Security Advisory: pcs security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2023:2652 Red Hat Security Advisory: pcs security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2023:1981 Red Hat Security Advisory: pcs security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2023:1961 Red Hat Security Advisory: pcs security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- openSUSE-SU-2026:10286-1 ruby4.0-rubygem-rack-2.2-2.2.22-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2026:10358-1 ruby4.0-rubygem-rack-3.1.18-1.3 on GA media SUSE / openSUSE Security Updates · Mar 14, 2026
- DSA-5530-1 ruby-rack - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3392-1 ruby-rack - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-7036-1 ruby-rack vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-6837-1 ruby-rack vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- RLSA-2023:2652 Important: pcs security and bug fix update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:3082 Moderate: pcs security and bug fix update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2023:2781-1 Security update for rmt-server SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:14811-1 ruby3.4-rubygem-rack-2.2-2.2.11-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2304-1 Security update for rmt-server SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13727-1 ruby3.3-rubygem-rack-2.2-2.2.8.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12784-1 ruby3.1-rubygem-rack-2.2-2.2.6.3-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2280-1 Security update for rmt-server SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13726-1 ruby3.3-rubygem-rack-3.0.9.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2295-1 Security update for rmt-server SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12773-1 ruby3.1-rubygem-rack-3.0.4.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12886-1 rmt-server-2.12-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2294-1 Security update for rmt-server SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-0559 Ruby on Rails: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jul 16, 2025
- openSUSE-SU-2025:14875-1 ruby3.4-rubygem-rack-3.1.12-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2023:0725-1 Security update for rubygem-rack SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-2101 genua genucenter: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 20, 2023
- ELSA-2023-12595 Important: pcs security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 20, 2023
- ELSA-2023-3082 Moderate: pcs security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 29, 2023