CVE-2024-21647
Medium
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.
SeverityMedium
CVSS5.9
Exploit probability—
Product
Puma
PublishedJan 8, 2024
First seenJan 8, 2024
Weakness typeCWE-444CWE-444
How to fix
Update
- puma puma5.6.8, 6.4.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| puma puma | v < 5.6.8, 6.0.0 ≤ v < 6.4.2 | 5.6.8, 6.4.2 |
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