cve/2019/CVE-2019-16254.md

CVE-2019-16254

Description

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.

POC

Reference

• https://www.oracle.com/security-alerts/cpujan2020.html

Github

• https://github.com/Live-Hack-CVE/CVE-2020-5247