CVE catalog
CVE-2024-21647
puma: CVE-2024-21647
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.96% · Oct 25, 2026
Puma is a web server for Ruby/Rack applications built for parallelism. Prior to version 6.4.2, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies in a way that allowed HTTP request smuggling. Fixed versions limits the size of chunk extensions. Without this limit, an attacker could cause unbounded resource (CPU, network bandwidth) consumption. This vulnerability has been fixed in versions 6.4.2 and 5.6.8.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | puma | sid | 8.0.2-3 | fixed |
| Debian | puma | forky | 8.0.2-3 | fixed |
| Debian | puma | trixie | 6.6.0-4 | fixed |
| Debian | puma | bookworm | 5.6.5-3+deb12u1 | fixed |
| Debian | puma | bookworm-security | 5.6.5-3+deb12u2 | fixed |
| Suse | rubygem-puma | linux enterprise high availability extension 15 sp2 | 4.3.12-150000.3.15.1 | fixed |
| Suse | rubygem-puma | linux enterprise high availability extension 15 sp3 | 4.3.12-150000.3.15.1 | fixed |
| Suse | rubygem-puma | linux enterprise high availability extension 15 sp4 | 4.3.12-150000.3.15.1 | fixed |
| Suse | rubygem-puma | linux enterprise high availability extension 15 sp5 | 4.3.12-150000.3.15.1 | fixed |
| Opensuse | rubygem-puma | leap 15.5 | 4.3.12-150000.3.15.1 | fixed |
| Ubuntu | puma | pro | 4.3.6-1ubuntu4 | vulnerable |
| Ubuntu | puma | pro | 5.5.2-2ubuntu2 | vulnerable |
| Ubuntu | puma | pro | 5.5.2-2ubuntu2+esm1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | puma | source | sid | 6.4.2-1 | not yet assigned | Not reported | [1060345] |
| Debian | puma | source | forky | 6.4.2-1 | not yet assigned | Not reported | [1060345] |
| Debian | puma | source | trixie | 6.4.2-1 | not yet assigned | Not reported | [1060345] |
| Debian | puma | source | bookworm | 5.6.5-3+deb12u1 | not yet assigned | Not reported | [1060345] |
| Suse | rubygem-puma | rpm | linux enterprise high availability extension 15 sp2 | 4.3.12-150000.3.15.1 | Not reported | SUSE-SU-2024:3644-1 | Not reported |
| Suse | rubygem-puma | rpm | linux enterprise high availability extension 15 sp3 | 4.3.12-150000.3.15.1 | Not reported | SUSE-SU-2024:3644-1 | Not reported |
| Suse | rubygem-puma | rpm | linux enterprise high availability extension 15 sp4 | 4.3.12-150000.3.15.1 | Not reported | SUSE-SU-2024:3644-1 | Not reported |
| Suse | rubygem-puma | rpm | linux enterprise high availability extension 15 sp5 | 4.3.12-150000.3.15.1 | Not reported | SUSE-SU-2024:3644-1 | Not reported |
| Opensuse | rubygem-puma | rpm | leap 15.5 | 4.3.12-150000.3.15.1 | Not reported | SUSE-SU-2024:3644-1 | Not reported |
| Ubuntu | puma | deb | pro | 5.5.2-2ubuntu2+esm1 | Not reported | UBUNTU-CVE-2024-21647 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://access.redhat.com/errata/RHSA-2024:2010]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2024_3644-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2024-21647]
- [https://osv.dev/vulnerability/DLA-3947-1]
- [https://osv.dev/vulnerability/SUSE-SU-2024:3644-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2024-21647]
- [https://security-tracker.debian.org/tracker/CVE-2024-21647]
- [https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-0949.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]