Improper Input Validation Affecting workerman/workerman package, versions >=0.0.0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

Exploit Maturity
Proof of Concept

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  • Snyk IDSNYK-PHP-WORKERMANWORKERMAN-569105
  • published27 Jul 2020
  • disclosed27 Jul 2020
  • creditSam Sanoop of Snyk Security Team

Introduced: 27 Jul 2020

CVE NOT AVAILABLE CWE-20  (opens in a new tab)
First added by Snyk

How to fix?

There is no fixed version for workerman/workerman.

Overview

workerman/workerman is an asynchronous event driven PHP framework for easily building fast, scalable network applications.

Affected versions of this package are vulnerable to Improper Input Validation. HTTP requests processed by workerman does not have adequate validation and as such, allows malformed Transfer-Encoding headers.

In cases where workerman is used as an intermediate proxy such as php-http-proxy as part of a part of a chain of servers , it is possible for an attacker to leverage this behaviour to conduct HTTP Request Smuggling.

PoC

Violation of RFC 7230 (Mishandling of Space)

POST / HTTP/1.1 Host:localhost Transfer-Encoding : chunked Content-Length: 4 Content-Type: application/x-www-form-urlencoded

0

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