#VU20467 Input validation error in BIG-IP
Published: August 29, 2019
Vulnerability identifier: #VU20467
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
BIG-IP
BIG-IP
Software vendor:
F5 Networks
F5 Networks
Description
The vulnerability allows a remote attacker to bypass security restrictions.
The vulnerability exists due to insufficient validation of user-supplied input when processing HTTP requests. A remote attacker can send specially crafted HTTP request that contains Content-Length and Transfer-Encoding headers and make the BIG-IP system to pass malformed HTTP requests to a target pool member webserver. As a result, an attacker might be able to perform HTTP Request Smuggling attack and influence the protected web application.
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.