Bug 1218638 (CVE-2024-21647) - VUL-0: CVE-2024-21647: rubygem-puma: DoS when parsing chunked Transfer-Encoding bodies
Summary: VUL-0: CVE-2024-21647: rubygem-puma: DoS when parsing chunked Transfer-Encodi...
Status: NEW
Alias: CVE-2024-21647
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Darragh O'Reilly
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/390249/
Whiteboard: CVSSv3.1:SUSE:CVE-2024-21647:5.3:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2024-01-09 09:09 UTC by SMASH SMASH
Modified: 2024-04-26 14:23 UTC (History)
5 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---
stoyan.manolov: needinfo?

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Description SMASH SMASH 2024-01-09 09:09:03 UTC 
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.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-21647
https://www.cve.org/CVERecord?id=CVE-2024-21647
https://github.com/puma/puma/commit/5fc43d73b6ff193325e657a24ed76dec79133e93
https://github.com/puma/puma/security/advisories/GHSA-c2f4-cvqm-65w2
https://bugzilla.redhat.com/show_bug.cgi?id=2257340

Patch:
https://github.com/puma/puma/commit/bbb880ffb6debbfdea535b4b3eb2204d49ae151d