HTTP request smuggling in WEBrick toolkit



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-47220
CWE-ID CWE-444
Exploitation vector Network
Public exploit N/A
Vulnerable software
 WEBrick
Web applications / Modules and components for CMS

Vendor Ruby

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU98142

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-47220

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests. A remote attacker can send a specially crafted HTTP request containing both a Content-Length header and a Transfer-Encoding header to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WEBrick: 1.4.0 - 1.8.1

CPE2.3 External links

https://github.com/ruby/webrick/issues/145
https://github.com/ruby/webrick/pull/146/commits/d88321da45dcd230ac2b4585cad4833d6d5e8841
https://github.com/ruby/webrick/issues/145#issuecomment-2369994610
https://github.com/ruby/webrick/issues/145#issuecomment-2372838285


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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