CVE-2024-21647 is a high-severity vulnerability affecting Puma, a web server for Ruby/Rack applications, specifically versions prior to 6.4.2 and 5.6.8. This flaw, categorized as CWE-444 (Inaccurate Parsing of HTTP Request), allows for HTTP request smuggling due to incorrect parsing of chunked transfer encoding bodies. An unauthenticated attacker can exploit this remotely with low complexity to cause unbounded resource consumption (CPU, network bandwidth), leading to a denial-of-service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.6.8CPE matchmatch criteria | cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:* | ||
>= 6.0.0, < 6.4.2CPE matchmatch criteria | cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.