HTTP Request Smuggling

Affecting reel gem, versions >=0.0.0

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Overview

reel is a fast, non-blocking "evented" web server built on http_parser.rb, websocket-driver, Celluloid::IO, and nio4r.

Note: This project is deprecated, and is not maintained anymore.

Affected versions of this package are vulnerable to HTTP Request Smuggling. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing.

It is possible conduct HTTP request smuggling attacks by sending the Content-Length header twice. Furthermore, invalid Transfer Encoding headers were found to be parsed as valid which could be leveraged for TE:CL smuggling attacks.

By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack, or obtain sensitive information from requests other than their own.

Remediation

There is no fixed version for reel.

References

CVSS Score

8.2
high severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    Low
  • Availability
    None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:P/RL:U/RC:C
Credit
Snyk Security Team
CVE
CVE-2020-7659
CWE
CWE-444
Snyk ID
SNYK-RUBY-REEL-569135
Disclosed
29 May, 2020
Published
29 May, 2020