CVE-2024-21647
Published: 8 January 2024
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
puma Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of standard support)
|
| focal |
Released
(3.12.4-1ubuntu2+esm1)
Available with Ubuntu Pro |
|
| jammy |
Released
(5.5.2-2ubuntu2+esm1)
Available with Ubuntu Pro |
|
| lunar |
Released
(5.6.5-3ubuntu1.2)
|
|
| mantic |
Released
(5.6.5-4ubuntu2.1)
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Needs triage
|
|
| xenial |
Ignored
(end of standard support)
|
|
|
Patches: upstream: https://github.com/puma/puma/commit/bbb880ffb6debbfdea535b4b3eb2204d49ae151d |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |