CVE-2024-21647 — HTTP Request Smuggling in Puma

CWE-444 — HTTP Request Smuggling9 documents6 sources
Severity
7.5HIGHNVD
EPSS
2.5%
top 14.74%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
PumaDebian Puma
Timeline
PublishedJan 8
Latest updateMar 7

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages6 packages

▶NVDpuma/puma6.0.0 — 6.4.2+1
▶RubyGemspuma/puma6.0.0 — 6.4.2+1
▶debiandebian/puma< puma 5.6.5-3+deb12u1 (bookworm)
▶Debianpuma/puma< 4.3.8-1+deb11u3+3
▶Ubuntupuma/puma< 3.12.4-1ubuntu2+esm1+1

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

4
OSV
puma vulnerabilities↗2024-03-07
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GHSA
Puma HTTP Request/Response Smuggling vulnerability↗2024-01-08
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OSV
Puma HTTP Request/Response Smuggling vulnerability↗2024-01-08
▶
OSV
CVE-2024-21647: Puma is a web server for Ruby/Rack applications built for parallelism↗2024-01-08
▶

📋Vendor Advisories

4
Ubuntu
Puma vulnerabilities↗2024-03-07
▶
Ubuntu
Puma vulnerability↗2024-01-25
▶
Red Hat
rubygem-puma: HTTP request smuggling when parsing chunked Transfer-Encoding Bodies↗2024-01-08
▶
Debian
CVE-2024-21647: puma - Puma is a web server for Ruby/Rack applications built for parallelism. Prior to ...↗2024
▶