HTTP Request/Response Smuggling in puma
CVE-2024-21647

5.9MEDIUM

Key Information:

Vendor

puma

Status
puma
Vendor
CVE Published:
8 January 2024

What is CVE-2024-21647?

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.

Affected Version(s)

puma < 5.6.8 < 5.6.8

puma >= 6.0.0, < 6.4.2 < 6.0.0, 6.4.2

References

https://github.com/puma/puma/security/advisories/GHSA-c2f...
x_refsource_CONFIRM
https://github.com/puma/puma/commit/5fc43d73b6ff193325e65...
x_refsource_MISC

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.