#VU23008 HTTP Response Splitting in Ruby - CVE-2019-16254
Published: November 27, 2019
Vulnerability identifier: #VU23008
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-16254
CWE-ID: CWE-113
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Ruby
Ruby
Software vendor:
Ruby
Ruby
Description
The vulnerability allows a remote attacker to perform HTTP response splitting attack.
The vulnerability exists due to insufficient validation of CRLF sequences within the WEBrick in Ruby. A remote attacker can send a specially crafted request to the application and perform a spoofing attack.
Remediation
Install updates from vendor's website.
External links
- https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254/
- https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-4-8-released/
- https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-5-7-released/
- https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-6-5-released/
- https://hackerone.com/reports/331984